Questions tagged [zoology]

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

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1answer
794 views

Squirrel nest construction

I've often wondered how squirrels -- specifically, eastern grey squirrels (Sciurus carolinensis) make their nests. Specifically, I've been curious about how they "weave" everything together to make ...
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284 views

Do animals get “unhealthily” fat in the wild?

Looking at a picture of a seriously fat cat, apparently directly nurtured by humans, popping up in a language learning app, I started wondering: do animals "in the wild" (this might be ambiguous, but ...
6
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1answer
501 views

Phoresis and mechanical vectors

According to wikipedia and Human Parasitology By Burton Jerome Bogitsh, Clint Earl Carter, Thomas N. Oeltmann Phoresis: In this type of symbiotic relationship, the phoront, usually the smaller ...
6
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1answer
821 views

Species identification - what kind of worm is this?

I am finding these worms in my bathroom since summer arrived. I have been finding these on floor, walls and damp towel I left hung overnight in bathroom couple of times. When these worms are squished, ...
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42 views

What kind of fish is this white blue-stained fish?

This fish has been spotted at the Great Barrier Reef near Cairns (Queensland). I put a big effort to find it via Google but never could encounter anything similar. I have also made an attempt to find ...
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32 views

What anatomical structures do baleen whales use to vocalize?

What anatomical structures do baleen whales use to vocalize? How does this differ between species?
5
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1answer
199 views

Do sharks fart?

My son is 5 and I'm encouraging him to be curious and ask questions of the world around him. He asked if sharks fart and how does it smell? He feels that it would smell of fish and be disgusting. He ...
5
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1answer
83 views

Snail species identification from the United Kingdom

Can anybody identify the species of this snail? From this website, it looks like a Common Snail. Could it be the dextral type of Cornu aspersum? These snails have been found in a garden, have ...
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346 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 ...
4
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1answer
84 views

What kind of bug is this? I found it on my Cleome plant in Atlanta Georgia

This bug was on my cleome plant in Atlanta Georgia
4
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1answer
156 views

Are there any parasites that alter human behavior in a self destructive way?

There seems to be quite a few examples of parasites taking over the behavior of insects in a way that leads to the death of the host. A couple of examples include: Spinochordodes tellinii: A ...
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230 views

Hammerhead worm

Which Bipalium is this worm? It has no tripe. Nor head collar. It is dark brown as can be seen in the image. This worm is right now in Mauritius. Please help me recognise this Hammerhead worm. Thanks
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99 views

Are there birds that don't vocalize?

I am wondering whether there are birds that do not vocalize at all. I know about the distinctions between songs and calls in passeriformes. I know that there are species that vocalize very little, ...
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75 views

(How) do horizontal pupils dialate?

I was looking at mongoose eyes in particular, but my understanding is: Circular (human-like) pupils simply get larger/smaller depending on light levels, no change in "shape" Vertical slit (cat-like) ...
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73 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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37 views

What's the lowest atmospheric pressure a tardigrade can remain active in?

I'm not asking what atmospheric pressures they can survive (we now they can survive the vacuum of space) I'm wondering at what point a deficit of atmospheric pressure would cause them to enter one of ...
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182 views

How old is the action of sneezing?

Is there an estimate for when the ability of sneezing evolved? A little bit of research, and some critical review of my memories tell me that: Many, if not maybe all mammals sneeze. Some reptiles ...
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56 views

Can Anyone Identify this Tissue?

I am hoping someone can identify the image below My wife felt a bug bite her and found this in her hair now she's worried that it was a tick. the photo is at 40X under microscope. I'm guessing it's ...
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56 views

Why do lions keep young preys and don't kill them right away?

I saw some (actually several) videos on Youtube of young lions and lionesses that after hunting baby preys keep them and even seem to play with them. The lions don't seem to want to hurt them but they ...
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54 views

why do these sounds make a dog unhappy?

Cross-posted from StackOverflow This is an odd one. I'm not sure it's the right place to ask, but maybe there are some sound / dog experts who can chime in? (no pun intended) We use two sounds on ...
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56 views

Difference between feral and domesticated honey?

Is there any significant differences in composition (and/or taste) between the honey of wild ("feral") honeybees versus that of domesticated ones used in beekeeping?
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60 views

Are baby centipedes poisonous like the adults?

I know that centipedes have an appendage called "poison claw".But I am not sure if the same is there in the baby centipedes and if its functional like that of the adults. So are baby centipedes ...
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293 views

Affinity for oxygen and carbon dioxide in animals

I'm currently reading Treatise on Invertebrate Paleontology (A) and don't understand the following fragment: The affinity for oxygen in lower animals is many times that in higher ones, whereas ...
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72 views

Do ants actually stick better after “licking” their legs?

I found an uncommonly large black ant and put it in a glass cup to observe it. It initially had a lot of trouble climbing vertically by any amount. However, I noticed it paused and when I looked ...
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51 views

Good resource for penguin behavior for non-specialists

I just returned from Antarctica where we made many shore excursions and spent a great deal of time among penguins - mainly Gentoo, and some Chinstrap species. They were fascinating and there were ...
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484 views

How do coyotes remove cactus needles from their paws?

Here, in Arizona, coyotes roam and hunt in the desert. While hiking with dogs, I often see spiny bits of Teddy bear cholla cactus on the ground. Dogs often step on these and get stung by the ...
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83 views

Reason for hiccups?

I recently fed my axolotyl an earthworm, which is good for them. I was rather kind and made sure that the said earthworm was quickly despatched beforehand. Now, watching the axolotyl whilst swallowing ...
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51 views

How do spiders get silk from their spinnerettes?

I'm 13 and writing a report on spiders. How do they use the silk protein gel from the spinnerets? How does it get from the spinnerets to the web? P.S. I know how silk is created, all the way up until ...
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71 views

Pattern in parental care behaviour from lower to higher animals?

I was studying about parental care behavior. There seems a pattern present in this behavior in case of vertebrates. The more evolutionary advanced class the animal belongs to, the greater effort an ...
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1k views

What are the identifying characteristics of a Jellyfish?

I was walking down the beach today (Wollongong Australia, near Sydney) and saw this Jellyfish washed up on the beach. Then I saw another. I wanted to work out what type it was but didn't know ...
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740 views

Do domesticated animals necessarily live longer than wild animals? counterexample wanted!

Generally domesticated animals do not need to worry about their food and other predators, and they have a lower probability of getting sick. However, it seems there is no sharp difference between ...
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46 views

Founders of Cnidarian colony

I know that colonial Cnidaria enlarge their colony by the means of asexual reproduction and sexual and asexual reproduction can originate individuals that will be part of other colonies. Nevertheless,...
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100 views

How did birds become so intelligent?

I have seen a Discovery Channel video of a bird throwing stones in a pot to raise the water level so it is able to reach and drink it. A similar experiment in this paper from Current Biology shows ...
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1answer
115 views

Insect identification: Fly with eye strip

Location details: Country - India, State - Tamil Nadu, District- Chennai. Found this fly in my backyard keen to know its exact name. Thanks for the help
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21 views

What kind of skull is this-I found it on the beach in Cape May

I am hoping someone can help identify this skull! We found it on the beach in Cape May. The skull size is about 4 inch in length. Thank you.
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29 views

Anybody know of any sources/papers on wild animals identifying birds by their calls/sounds?

I'm doing a literature review about identifying birds, and was hoping to find some examples of animals being able to identify birds by sound (eg a mouse knowing the normal call of a sparrow is not the ...
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57 views

What animal is this? A bee? red mason bee? (Bee-like with brown/orange fur)

The picture was taken at the Bodensee (Lake Constance) in Southwestern Germany in June 2019. I tried to Google "Bee with brown fur", but the only thing that came up was a red mason bee, and the ...
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24 views

Is there anything that can tell me precisely how the cross sectional area/radius of a snake changes over length?

I am trying to 3D model a green anaconda which I thought would be simple, then I realized there is actually this very gradual change in thickness from a minimum around its neck to a maximum somewhere ...
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45 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 ...
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0answers
55 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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70 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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35 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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52 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
31 views

Honeybee relatedness: workers and nephews

This is my first question on this site. If anyone could help me get to the bottom of it, I would be very grateful. I am currently working on a lecture on kinship in animals. It goes without saying, ...
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0answers
59 views

Larva attacking frog ? Guide about this

The above picture was taken in western forest of India where a larva attached itself to a frog neck. What is it and how it will effect the frog?
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Efficacy of sonic kangaroo deterrents

Bender (2003) tested the efficacy of sonic kangaroo deterrents. Their device is static (and apparently ineffective). Has there been any rigorous testing of the whistle-like 'kangaroo deterrent' ...
2
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1answer
120 views

Identify this excreta!

A picture is worth a thousand words! It's about 1.3cm (1/2") long. We rented a basement and I found this on a machine that was moved in a bit earlier. I would like to know if there are any mice, ...
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41 views

What is this frog I found

What type of frog or toad is this? I found him in my backyard in southern Alabama and he is clearly very small. I’m not sure what species it is, it’s mostly brown but has small spots on the top of his ...
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36 views

why hens determine the sex of the chick?

So, I have an exercise where I have to correct the second part of the sentence. It goes like this: In hens, the sex of the chicken is determined by hen, because the hen is the heterogametic ...
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0answers
27 views

Why do Pelicans seem to disappear when circling high in the sky on a sunny day

When I watch Pelicans circling high in the sky on a sunny day, at a certain point in that circle, they disappear from view, then reappear again further along in that circle. Is it something to do with ...