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Questions tagged [zoology]

The biological study of animals.

2
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1answer
41 views

Killer whale color

What purpose does the B/W killer whale color scheme serve? And what evolutionary pressure could possibly force all of them to go B/W in such a peculiar way ie with weird patches in the black. Also why ...
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1answer
28 views

What species would this be?

A common way to define species can be found on Wikipedia: A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can ...
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0answers
41 views

Why does centipede keep running into my hair and bite me? [on hold]

After I moved into a new house in the suburban area, I was bitten by an unknown creature near my spine at mid-night. I felt painful and dizzy. However, after 15 mins, I no longer felt dizzy and the ...
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0answers
39 views

Why can dogs hyperventilate without consequences like humans?

During the heat of summer, dogs usually breathes very fast, like 100 times per minute or more. If humans do so, we will experience an array of negative effects like dizziness, finger tingling or ...
2
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1answer
64 views

What species is this little white bird?

This bird was found in my backyard in the north east of Italy. It's about 5cm long and can fly as high as 1.5m (so far).
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0answers
20 views

Why are birds have balls in the form a cork screw i dont have the scientific name [closed]

Why do birds have penises in the form of a cork screw?
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1answer
29 views

What type of moth is this?

What type of moth is this that was on my wall in Spain
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0answers
28 views

Why are dolphins born tail first?

I heard most dolphins are born tail first. I have read many explanations from books and internet articles and they said that dolphins are born tail first to prevent them from drowning. But now I don'...
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0answers
15 views

Why do wallowing animals not get trench foot?

Immersion foot syndromes are pretty nasty to have and can be life-threatening when not treated. But some animals wallow for long periods and I expect that such animals do not suffer from conditions ...
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0answers
27 views

What species of frog is this?

I was walking around outside my house when I found this little guy clinging to the outer wall of my house. The house in question is located in Indiana, United States. What is interesting to note is ...
2
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0answers
41 views

Can you help me identifying an insect I saw?

I'm a student of biology and yesterday we went to the fields to collect some plants for our herbariums. Suddenly one student of our group said that he saw a very strange bug that he thought that was ...
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0answers
58 views

what is this bug ? i found it on bed 2 times

What is this 1mm long bug I found on my bed in Egypt? Here is its back photo
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1answer
62 views

What species is this grey insect with red antennae and mouthparts? [duplicate]

I’m very curious to know whether this is a type of ant or not, I only see 6 legs. Found in Tampa, Florida near Tarpon Springs.
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1answer
67 views

Why is sex hurtful for some animals but pleasurable for others?

Sex seems to be pretty hurtful for feline for example. On the other hand sex is pleasurable for humans. Why is sex pleasurable for some and not for others? How do these things evolve?
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1answer
44 views

Is this an asian hornet

My mother found a hornet at home (in northern France) that is probably building a nest. Is that an asian hornet? If yes, how can I exterminate them?
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0answers
18 views

What is the smallest known viviparus

I want to know what is the smallest viviparus known at this time. I was Googling, but I can discover this animal. Thanks.
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0answers
37 views

What exactly happens to animals that fail mating rituals?

Quite a few animals (usually males) participate in various mating rituals to showcase their fertility as mates. While presumably, the successful ones get a chance to mate with females, it occurred to ...
4
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1answer
270 views

What is the largest species of polychaete?

My Google searches seemed to avail no results. My question is: What is the largest living species in the class Polychaeta? That's about it. I understand that there will be few accessible weights for ...
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0answers
162 views

Do cats produce DMT?

Edit: If somebody (anybody) wants to add an answer so the bounty won't go to waste, please do so! The comments have already introduced me to the Kegg metabolism database, some interesting papers, and ...
3
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1answer
111 views

Identify This Glowing Insect

When I was walking in my garden at night I saw this small glowing insect, can you identify what is this insect? Location: Middle-East Palestine Size: Length about 1 CM This image in the dark (see ...
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1answer
30 views

Why do spinner dolphins spin?

Spinner dolphins have a behavior where they jump out of the water and spin a bunch of times in the air. Wikipedia's article on this just states These spins may serve several functions and doesn't ...
6
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1answer
75 views

What are the predators of Glaucus atlanticus?

I'm researching the Glaucus atlanticus, also known as the blue glaucus, among various other names, but after reading quite a few articles and searching on the Internet as many different ways as I can ...
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0answers
25 views

Can someone help me identify this Brazilian spider?

Does anyone know anything about the identification of this spider? Sorry, but it's the only image I have. It was shot at 2004, January 25th (summer), at 11:27 AM, in Cerrado biome at Minas Gerais ...
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0answers
35 views

How can I learn biology by myself? [duplicate]

I am only 15 years old,and my primary school education hasn't been that good,also I forgot a lot of things. I would like to start again,and I am asking for your advice. What are some of the good ...
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0answers
14 views

How many times have Ecdysozoans made the transition to land? [duplicate]

In my evolutionary course we were taught that land plants are a monophyletic group, the transistion to land happened only once. The same goes for the tetrapods within the vertabrates. However this ...
2
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0answers
29 views

Identify this frog from Bangladesh

Description: About 5-6 in long Time: March,2019 (summer) Location: (Alutila Cave) Khagrachari, Bangladesh
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2answers
119 views

Tiny white very hard cell bug! Please help to identify!

I found these bugs walking on the floor/ wall and on my laptop. And unfortunately I think they could be in my bed, too, since I bring my laptop to bed sometimes. I live in a big city in the ...
1
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1answer
91 views

Tiny dark-colored bug ID in Amman-Jordan

I live in Amman-Jordan and I keep finding this bug species on my walls. I saw four till now on the walls of another room. A little bit bigger than the first one. Click on all photos to open full-...
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0answers
25 views

Is Wikipedia a good source of taxonomy? [duplicate]

I have been quite interested in biology lately,and I would like to know whether it is a good choice to look up taxonomic information there.
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0answers
13 views

Identification of Black-Grey Striped Spider (India ,Kolkata)?

I found it on my rooftop . Location : India , Kolkata Season : Summer Morphology : Hairy Legs , with black and grey striped body . Length- 4cm -5cm with legspan Width - 2cm-3cm I couldnt get better ...
3
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1answer
45 views

What is this white, winged insect?

I saw this insect crawling on a wall in the UK (Birmingham) today (March 28th). It's about 5mm long. I assumed it was a white fly, but having looked at other images of white files on google, I don't ...
3
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1answer
54 views

What's the smallest flier that migrates?

Painted ladies and monarchs migrate hundreds of miles (~1.61 hundreds of kms). Are there long distance fliers that are significantly smaller? Dual question: Are fliers' migration distances strictly ...
0
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1answer
56 views

Why are sea dwelling mammals less aggressive than land dwelling mammals?

Many mammals on land seem to be quite dangerous to humans: e.g., tigers, lions, elephants, hypos etc. However, their sea-dwelling counterparts (e.g., orcas, dolphins, sea lions, whales etc.) are ...
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0answers
20 views

How to recreate bioluminescence in a lab?

I have several mg/mL of D-luciferin, luciferase (firefly), ATP solution (25 mmol) and MgSO4 (for the mg2+ ions). The experiment has to be done in cuvettes of 2,5 mL (if I get any results, it will be ...
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0answers
13 views

How do some deep sea creatures lower their metabolism to stay alive for a long time?

I was watching some bio related videos and saw in one that some deep sea creatures and other organisms purposefully limit their movement to decrease metabolism rates. Do they live longer? If we ...
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2answers
3k views

What exactly is this small puffer fish doing and how did it manage to accomplish such a feat?

I recently saw a video on youtube where it shows a puffer fish making intricate designs in the sand: OZZY MAN VIDEO The puffer fish made this design on the sand: What exactly is the puffer ...
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2answers
135 views

Why do fruit flies go so close to large reservoirs of liquid when they are likely to fall in due to surface tension?

I had accidentally left out half a glass of red wine by the windowsill when I went to sleep. As anyone knows, if you do this with a window cracked you will get quite a few fruit flies near it in that ...
2
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2answers
50 views

Red and yellow insect found in kitchen in Conrad, Montana (USA)

Beetle found in our kitchen in Conrad, Montana (USA) on 3/13/19:
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1answer
78 views

What is the reason behind the subphylum name “Urochordata” for tunicates?

There are two major invertebrate subphyla of the chordates (phylum Chordata): Cephalochordata (the lancelets) Urochordata, aka Tunicata (the tunicates) My understanding is that the cephalochordates ...
5
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1answer
146 views

What are these tiny creatures swimming around my aquarium?

I was checking out my aquarium today, and decided to scoop out a water sample and take a look at it more closely. What I discovered were numerous, very, very tiny white worms (?) swimming around in ...
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0answers
45 views

Small mammal identification

Small skull found in Alberta, Canada. Do not know the region. Skull is about 17 mm in length. Trying to identify the species, narrowed it down to most like a species of vole but can't figure out which ...
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0answers
33 views

Is there animal other than human that can recognize distal causes?

We know animals can recognize proximate causes. For example, if animal A hits animal B and injures it then usually animal B is able to associate animal A with his injury. From our everyday experience ...
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0answers
65 views

What is the name of this moth and why does it have an extra wing?

Moth of length 15mm. Seen in Kerala, India on March 2019. Third Unusual wing part visible. Without mobile flash the colour of moth visible is completely black.
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0answers
23 views

If the urbilaterian already had mouth and anus, how it came that their functions inverted in deuterostomes?

If the urbilaterian already had mouth and anus, how it came that their functions inverted in deuterostomes? I hardly can imagine how the functions of the mouth and anus can be swapped. Also, if the ...
4
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1answer
55 views

Is the deep ocean fish look ugly because due to darkness there is no visual sexual selection? [closed]

Is the deep ocean fish look ugly because due to darkness there is no visual sexual selection? If so, is there a common notion of beauty between humans and animals?
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0answers
12 views

Does the preservation fluid (ethanol or formaldehyde) leach heavy metals from mollusc tissue?

In a thread on researchgate, the concern was raised that long term exposure to unbuffered preservation fluids such as ethanol or formaldehyde may leach heavy metals from biological samples due to a ...
4
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1answer
82 views

can you tell me what kind of animal this is?

I found this skull over 2 years ago and i have been unable to find another like it or even come across someone who knows what it is. i live in south mississippi and the animal it came from looked like ...
2
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2answers
74 views

Has an ape ever drawn/painted something?

I know there are plenty of examples of apes making paintings and drawings, but has there ever been a recorded case of one representing something in their art?
3
votes
1answer
51 views

Animal with “advantageous” trait in a environment where the trait is never utilized (high cold tolerance in mild climate) - natural selection occur?

If you were to put an animal with a certain type of seemingly advantageous "trait" into an environment where the trait was not necessarily needed, ex: Putting an animal with a high tolerance for cold ...
4
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3answers
110 views

Evolution question on speciation? Really confusing!

Okay, my teacher assigned this homework question, but nothing like this was ever given in our textbook. Suppose that a type of tree tends to speciate over 10 million years and a species of fly tends ...