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Questions tagged [zoology]

The biological study of animals. Very broad use so be sure to add additional clarifying tags

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Locating a hornet nest

Say you are noticing relatively many hornets since 2 weeks or so, showing up at the windows of a flat you are living in. The frequency of hornets constantly probing the windows is relatively high. ...
maxschlepzig's user avatar
0 votes
1 answer
37 views

Copyright free species image database [closed]

I assume that there are several websites with licence-free photographs of animals, plants, fungi, etc. (properly identified at species level, of course), but I have not been able to find them. Can you ...
Carmen's user avatar
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1 vote
1 answer
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Why would a snake try to swallow itself?

On Youtube, there is a video where a veterinarian has to take care of a snake who swallowed its tail, like trying to swallow itself. The man didn't seem surprised about this behaviour. https://m....
Quidam's user avatar
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1 vote
1 answer
88 views

Species Identification - Blue multi-segment arthropod

This bug has a blue body, more than 8 legs, an orange head, and on its behind it has two stripes that are sometimes found on centipedes. Sorta hard to remember size, but I estimate about half the size ...
Benjamin Longworth's user avatar
5 votes
1 answer
91 views

If the shrimp is a decapod, why does it have 20 legs? (10 swimming + 10 walking legs)

Decapods like crabs have exactly 10 legs. However, shrimps have 5 pairs of swimming legs and 5 pairs of walking legs. A total of 10 pairs. Why are they classified as decapods then?
Mohammed Hamza's user avatar
3 votes
1 answer
992 views

What snake is this? Is it venomous?

Location: Ozark Mountains in Northern Arkansas. Size: Perhaps 4-6 feet in length. Behavior: Mower uncovered a couple of these in tall grass/brush next to a log. They did not coil up. This one lay ...
mherzl's user avatar
  • 163
2 votes
1 answer
132 views

Butterfly wings with ragged edges - worn out, camouflage, fungus, or something else?

Here are two different butterfly individuals of different species in northern Taiwan whose wings had ragged edges. The whitish one was pretty lethargic and just wanted to stay in the grass and be left ...
uhoh's user avatar
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2 votes
0 answers
51 views

Do gastropelecid hatchet fish have powered flight?

These sites contradict each other: Source 1 claims that hatchet fish do not fly, but simply jump out of the water instead: 'Species that were once thought to have powered flight, the Pantodontidae ...
Harrychink's user avatar
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0 answers
69 views

Generally, order and other higher taxonomic categories are identified based on the aggregates of characters. Please explain this

In a book it is written: Generally, order and other higher taxonomic categories are identified based on the aggregates of characters. What does it means? Every group is made only after observing ...
Amit Kumar's user avatar
1 vote
1 answer
46 views

Are there animals which produce sound through direct muscular oscillation?

Obviously, muscles are involved in producing sound, but usually not directly. I.e., the muscles that control human vocal cords do not actually vibrate the vocal cords--a different set of muscles ...
Logan R. Kearsley's user avatar
1 vote
1 answer
98 views

How do animals that live in dens keep the dens from flooding?

When it rains heavily or flooding starts what do animals like foxes,wolves, and any other animal that makes a den or lives underground do.? Do their den's/home's flood?
DohnJoe's user avatar
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4 votes
1 answer
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What is this arthropod? (found in Lapland - Finland)

I found this arthropod climbing the wall of my room in Lapland, Finland. (the max width is about 0.5 cm) What is it? Is it dangerous?
Francesco Iapicca's user avatar
2 votes
1 answer
298 views

Are these objects we found ambergris? How to distinguish ambergris from other deposits/minerals

These two objects below were found on the East Coast of the North Island of New Zealand on seperate occasions but within 5km of each other. They both had a strong and unique, neither pleasant nor ...
Lamar Latrell's user avatar
0 votes
0 answers
75 views

Patterns of craniofacial topology

There are animals which are not directly related but have similar craniofacial topology. For example: koala, donkey, mouse, turtle, parrot all have features seemingly belonging to same topology, ...
Mikhail V's user avatar
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0 answers
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What distinguishes a colony from multicellular organism?

I would like to inquire what made biologists conclude that colonies such as the famous Volvox is an organism constituted by independent cells as opposed to a multicellular being. I read that it has ...
Jj Luntayan's user avatar
2 votes
2 answers
68 views

What is the term for a missing feature in a descendant that was present in an ancestor which defines a clade?

Examples include: A snake does not have legs, but is still considered a tetrapod as it is a descendant of animals with four legs Bdelloidea (class of rotifera) can only reproduce asexually, but is ...
schajan's user avatar
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3 votes
0 answers
38 views

Why electrical synapses are more common in invertebrates?

I suppose it's because they live in an environment where there's a constant vulnerability to predators and they need to respond quickly. But it's not really the case for many invertebrates and besides ...
Venkatesh Choudhary's user avatar
7 votes
2 answers
2k views

Identifyication of small delicate shell found on the beach

I found this item on the beach today in north west England. It’s very light weight and delicate, about 3cm long and some interesting patterns on it. Any ideas on what it is would be greatly ...
Whiskeyqueen245 's user avatar
0 votes
1 answer
82 views

Who put Cephalopoda in Mollusca?

Cephalopods are considered mollusks due to homologies such as a shell, a muscular foot, and a mantle. But, they also have closed circulatory systems, two giant eyes, and eight prehensile legs. When ...
imrobert's user avatar
  • 440
2 votes
0 answers
41 views

Identify caterpillar

Hi i live in the Nilgiris region of South India and I found this fellow on one of my Lemon Grass plants. About 8-10 cm long with fine hair all over. Let me know what species this could be. Thanks
Jamie's user avatar
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0 votes
1 answer
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How to understanding the mouse strains name and differences in mouse strains used in biology

I am currently working with various mouse strains in my biological research and I am encountering some confusion regarding their nomenclature and differences. I understand that the different names ...
zhang's user avatar
  • 103
3 votes
1 answer
127 views

What kind of Bolivian spider is this? Is it a black widow?

I found this spider near La Paz, Bolivia. I have been looking all over the internet to try and identify it, but with no luck. Could someone please help me?😁 Initially I thought that it was a black ...
Henri's user avatar
  • 55
2 votes
0 answers
57 views

How do Addax defend itself from predators?

The addax (Addax nasomaculatus) is a critically endangered antelope adapted to live in extreme desert conditions. It has long impressive horns that can potentially serve as a weapon because they are ...
Triceratops's user avatar
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0 votes
0 answers
102 views

How do whales swallow food underwater without drowning?

How do whales swallow food underwater without drowning? I know they have a valve that blocks the trachea while the mouth is open and that breathing is made from dorsal or parietal breathing holes or ...
Triceratops's user avatar
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2 votes
1 answer
76 views

Why are polar seas rich with nutrients and plankton?

It is well known that baleen whales migrate to the polar seas to feed on plankton and krill (marine crustaceans). The question why are the polar seas rich with krill and plankton? If the answer "...
Triceratops's user avatar
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0 votes
1 answer
145 views

Are all animals “information seeking”?

I read on Britannica that all animals down to microorganisms are "information seeking", but there was no source to back up the claim. One way to begin exploring curiosity is to understand ‘...
Hasan Zaeem's user avatar
1 vote
2 answers
510 views

What kind of spider is this (from Bangladesh)?

I just saw this spider in my bathroom. I was wondering what kind of spider is this and if it is venomous. Country: Bangladesh
syed shoeb's user avatar
0 votes
0 answers
56 views

Why did the effects of the Pleistocene extinction not significantly impact African megafauna at the end of the Ice Age?"

It seems that megafauna extinctions did not have a significant impact on African megafauna at the end of the Ice Age. Humans also lived in Africa relatively commonly during the end of the Ice Age, ...
curious_mind's user avatar
11 votes
2 answers
3k views

Does interspecies breastfeeding occur in the wild?

Does interspecies breastfeeding occur in the wild? Say, for example, a zebra feeding a wildebeest, or a bushbuck feeding a gazelle. There is a Wikipedia page on this topic but it only shows animal-...
Samid's user avatar
  • 307
0 votes
1 answer
300 views

Which predator / prey pair of species have the most drastically different body size?

I'm trying to identify which 2 species, one predator species and one prey species that have the biggest size difference. Specifically, which predator hunts the largest prey relative to itself? I'm ...
Harthag's user avatar
  • 270
2 votes
0 answers
56 views

What is happening to this moth cocoon?

We 'adopt' a catepillar each year and this year I believe we have a Buff Ermine Moth. It seemed healthy and created a woven cocoon. It was at this point that I found out these moths overwinter. We put ...
Helena Johnson's user avatar
2 votes
2 answers
45 views

Prevention of disease spreading in animal kingdom

It's my first question on here, so I'm not sure If my question fits the theme. Please refer me to the appropriate one, If I have made a mistake. So a question that I wanted to ask has to do with ...
Đumić Branislav's user avatar
10 votes
1 answer
737 views

Fungivore that feeds specifically on spores

I'm wondering if anyone has knowledge of an organism that specifically feeds on the spores of fungi. When I attempt to research this the results are flooded with numerous examples of fungivores but I'...
Reese Lassman's user avatar
3 votes
1 answer
360 views

Largest crinoid species

On the wikipedia page of crinoids (sea lilies and feather stars), one can find the following statement in the paragraph "Morphology": [...] and fossil species are known with 20 m (66 ft) ...
G. Blaickner's user avatar
0 votes
0 answers
54 views

What animal does this foot skeleton belong to?

I found an articulated foot skeleton. Sun bleached. What animal is this likely from?
Roxy's user avatar
  • 133
0 votes
0 answers
13 views

How to empirically differentiate social interaction from self-awareness in the mirror test?

When placed in front of a mirror, manta rays are more active (e.g. expose their ventral side to the mirror) and present more frequent and repetitive movements (e.g. furling and unfurling their ...
Sam's user avatar
  • 101
0 votes
0 answers
40 views

Phonotaxis and Preference

(Am I losing my mind?) I could have sworn there was solid research indicating that phonotaxis evidence for preferences (during ex situ experiments) was "held up" by en situ experiments...(by ...
Maddy M's user avatar
0 votes
0 answers
40 views

What animal makes these sounds?

An animal near where I live in Austria is making these sounds. I'm thinking it is in distress, but I can't find it. Can anyone tell me what it is? It goes quiet when you get close, but responds ...
Double M's user avatar
  • 101
0 votes
0 answers
89 views

Can a crocodile crack open a turtle's shell?

To put the question more accurately I consider the Saltwater Crocodile, which has been measured to have a bite force of 16.4 kN and estimates of up to 34 kN in 6.7-meters long individuals. For turtles ...
Triceratops's user avatar
  • 1,204
7 votes
1 answer
964 views

Very small, light and dark "insects" - Italy - Infestation, healthy problems? - Insect identification [duplicate]

I'm currently in a town near Savona, on the coast in north-west Italy. We had a problem with pigeons, that create their nests in the space between the roof and the ceiling. Now, from the tube of the ...
M4rc0txt's user avatar
0 votes
0 answers
72 views

What caused these shallow depressions in a European forest?

Recently, in an eastern European forest, I came across many depressions in the ground of a regular round shape, with a flat bottom and vertical walls. Many were filled with water. Some were obviously ...
Vladimir Orlov's user avatar
0 votes
0 answers
49 views

Is it possible to identify a kind of scorpion based on a photo of its dried body

Somebody at my university have came back from a vacation trip and brought back a dried body of this small scorpion. Can you identify it for me? This is a very tiny (?) scorpion, if I may say so. I can'...
trejder's user avatar
  • 323
3 votes
1 answer
120 views

Estimating the diameter of all earths biomass as a sphere

I am working on an educational resource about the relative scales of resources compared to the earth. Attached is an example of the earth compared to various elements contained within, as well as a ...
Robb Godshaw's user avatar
2 votes
4 answers
758 views

Where do the bones of dead animals go?

I've spent quite a bit of time in the wild, but I've seen little to no bones lying on the ground. Large bones such as skulls, spines, horns, hooves are not eaten by any other animals, and even ...
Vladimir Orlov's user avatar
1 vote
0 answers
56 views

What this shape name? (concave laterally and straight medially, cross section shape of crayfish rostrum)

What is a shape name for upper surface (colored black) of the cross-sectional shape in the attached image? It is a cross-section through a crayfish rostrum. It is horizontal and linear medially, but ...
crayman9's user avatar
3 votes
1 answer
863 views

Help identifying an insect

I live in Milan, Italy in the city center. I live in this house since 5 years and I keep finding the insect pictured below. I see it throughout the seasons (temperatures here range from -1°C to +35°C ...
user3161330's user avatar
29 votes
1 answer
4k views

I am trying to identify this bone I found on the beach at the Delaware Bay in Delaware. It is 2 1/2 inches wide and 1 1/2 tall

This bone was found at Big Stone beach on the Delaware bay, Delaware. It weighs only 19 grams
Robert Sperduto's user avatar
0 votes
0 answers
31 views

Quantifying species detection probability using sign surveys as a function of distance in known occupied sites

I ran a pilot study to determine the probability of detecting a rare African small carnivore using scat (feces) detection dog surveys to assist with future population monitoring and occupancy surveys. ...
Michelle's user avatar
0 votes
0 answers
43 views

What is the Latin term for animals which dust bathe?

I have lost track of this term. I am sure that I encountered a Latin word (not a taxonomic word) which applies to all animals which dust bathe. I fact, I am not even sure how to describe a word like ...
Theo H's user avatar
  • 109
0 votes
0 answers
65 views

Is there an example in evolution where a huge jump in evolution happened due to a dramatic mutation?

Here is a chicken that due to a mutation got 4 legs: I wonder, are there examples, where such one-time dramatic mutational chages gave rise to a new species? Are there species that appeared not due ...
Anixx's user avatar
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