Questions tagged [zoology]

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

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29 views

How many hairs per sq. cm. (or inch) do hamsters have on average?

How many hairs per square centimeter (or inch) do common pet hamsters (Mesocricetus auratus or Phodopus sungorus) have on average? I thought this would be easy to find by googling, but the best I've ...
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what kind of bug do you thing this is? [duplicate]

Can y’all please tell me what kind of bug this is? I found it crawling on my wall and have no idea what it is
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The Fish-Tetrapod Transition, evolution of the “elbow” in Stem Tetrapods

The Acanthostega and Tulerpeton limbs seem to form "elbows" in an axis perpendicular to the flexor and extensor plane of the fin. They seem to "flex" their "elbow" ...
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What is the name of this bird from Tanzania?

I took this picture in late 2018 in Tanzania. The Birds of East Africa book does not include it and I've been unable to identify it looking on the web. Can someone help me identify it, please. Thank ...
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What type of creature makes those mounds?

Location: South Ireland, Appeared: 2020 Nearest river: 500 meter down hill south Water is running down the hill also but there’s drainage to not flood the grass Seen before: potted plant I used earth ...
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Sprawling locomotion, are knee/elbow joints perpendicular to erect locomotion?

The first terrestrial animals used sprawling locomotion. Is the knee and elbow jointed perpendicular to the joints in erect locomotion? It is easy to assume so, based on how the limbs move in ...
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1answer
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Bats observed hunting insect prey - any evidence of “handedness” (laterality) in circular flight pattern?

Whilst watching a bat hunting on the wing at dusk (most likely was a species common to my urban UK location, e.g. pipistrelle) its flight pattern around the garden comprised circles, several metres in ...
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Can this toad be approx 1cm long?

Recently the toad from this video has been identified as an American Toad inside this post in Reddit. The original video mentions it was filmed in White Clay Creek State Park, Newark, Delaware, USA. ...
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Can someone identify this worm?

The first time I saw these was in an old cooler full of water by my shed, there were 3 of them about 2 weeks ago. Now tonight I found one crawling up my door. Can anyone offer some insight? I have ...
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Difference between haemocoel and coelom

I am looking for an embryological perspective on the following question. I know about coelom derivation, but I want to know how haemocoel is derived and how it is fundamentally different from coelom. ...
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What are these clear sacs all over my house and coming out of my faucet?

I live in el Monte California which is in southern California. I keep finding these egg like sacs on my floor and on everything in my apartment. They are coming out of our water faucet in every room. ...
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question on brain dissection

I was dissecting a sheep's brain for my students and one of them asked a question about the corpora quadrigemina he asked why did two of them(the superior colliculus) look more red than the other two ...
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confusion in types and kingdom system of classification

I am a high school student and I want to ask: is the 'kingdom system' of classification (two-kingdom, three-kingdom etc.) different from artificial or natural classification? I am asking this because ...
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1answer
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Animal species anatomy [closed]

https://en.wikipedia.org/wiki/Animal Do all animal species have two lungs and two kidneys similar to human beings?
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Found lots of these insects on my study desk today. What are these? [duplicate]

I came home today, switched on the lights and saw many of these running around my study desk. Any help in identifying these little insects? The picture is zoomed in so it doesn't really do justice to ...
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Weird Black Worm (Possibly Flatworm?)

I was out walking one night (In Florida) when I spotted this creature sliding around in the grass. I believe it may be a New Guinea Flatworm, but not quite sure. Could anyone please provide a definite ...
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Animals with very high bite pressures

When media, such as this site wants to explain just how dangerous large animals are, they often quote bite-forces as pounds per square inch (psi). However, it appears that they mixed up the units, as ...
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Why do Oak Processionary caterpillars form processions?

Firstly ,I don't live in Europe. I live in South India, and my garden has a Night Flowering Jasmine tree. And these trees are quite popular, but notorious for their caterpillars. In our region ,there ...
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48 views

Need help identifying what looks to be a skull

( BOTTOM VIEW )I was given this skull(?) by someone a few years ago, it was found washed up on a beach in Panama. I collect bones so usually I’m really good at IDing skulls and I’ve spent some time ...
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Harbor Seal behavior and personality

I'm doing some research on Harbor seal behavior, but I haven't been able to find much on general behavior such as personality, quirks, ect. Does anyone have anyone have any firsthand experience with ...
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1answer
31 views

What species is this colourful caterpillar?

What species is this colourful caterpillar found on a road in Central Europe?
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1answer
35 views

Can elephants trumpet when they have water in their trunks?

I am writing a fun story about elephants and want to know if elephants can trumpet or at least, make noises when they have water in their trunks, like when they are drinking water. Thanks for your ...
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1answer
34 views

Phytophagous worm identification

These worms appear soon after the rain lilies flower and slowly nibble on the leaves growing big and chubby. They are about 5cm long, have many small red legs underneath, have no spines or spikes, and ...
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Digestion of Cud in a Ruminant [duplicate]

A ruminant's digestive system contains 4 chambers: The rumen, reticulum, omasum and abomasum. The food travels from the mouth to the rumen, then to the reticulum, back to the mouth, then back to the ...
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1answer
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What is this strange sea creature we found on the beach?

We found this on a beach in North Devon, UK. I've never seen anything like it. There's a yellowy-ball in the middle with 5 pointed shells attached to it, each of which seems to have a single "leg&...
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1answer
31 views

Characteristics of Araneus hui (an orb-weaving spider)

What are the characteristics of Araneus hui? Neither thematic literature nor photos was found. Mentioned in RU Wikipedia, reference wasn't found. https://ru.wikipedia.org/wiki/%D0%9A%D1%80%D0%B5%D1%81%...
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Do uerotelic organisms save roughly 3/4ths water compared to ammonotelic?

My analysis based on Daniel Atkinsons work, professor in biochemistry (see references below), is that ureotelism is saving 3/4ths water compared to ammonotelism. Is this correct? What do people here ...
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1answer
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Can anyone identify this object?

It was found on the shore of the Ohio River in Kentucky. It is very hard, like bone, and feels hollow but does not rattle. It is translucent. I do not think it is skull of a water fowl even though ...
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Please help ID this possible fish skull

Found on the shoreline of a tributary of the upper part of the Chesapeake bay in Maryland: [![enter image description here][1]][1] More pictures: https://photos.app.goo.gl/Cg8t4Ttsde4oDDDg7 ...
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What websites biologists use to check what new plant or animal species have been discovered in the world?

What are the databases or websites that biologists use to check what new plants or animals have been found in the world? The service should list the location of the discovery, time of discovery, image ...
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1answer
76 views

Why don't the female lions in a pride help their male lion to protect their children from other males?

I watched a dozen of videos taping the fights between male lions; none of them involve female lions assisting in the fight. It is also known that the male lion who take-over the pride will kill all ...
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1answer
50 views

Anyone can identify this moth?

Found on the ceiling of my flat. Place: London, UK Date: 9th of August Size I would say slightly more than inch and inch and half (3-4cm) wingspan Suspect on the photo:
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2answers
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How is Elysia chlorotica classified as an animal capable of photosynthesis?

Elysia chlorotica is a kind of sea slug. Technically, it's an animal. However, it undergoes a process called kleptoplasty, which is the absorption of chloroplasts from algal prey cells which are then ...
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Identification of a red arachnida (?) (picture and video)

I found this in a greenhouse in Norway. It is a few millimeters in size, I could fit 5-6 of them on my thumbnail. It looks a lot like this one from Wikipedia https://en.wikipedia.org/wiki/...
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1answer
59 views

Bed bug or booklouse?

I found this creature climbing on the lower part of a wall inside apartment. Can you distinguish if it's a bed bug nymph or a booklouse? Sorry the photo quality isn't great, because it's so small (2 ...
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33 views

Can elephants drink water by directly sucking it up from its nose?

For animals and humans, our noses are connected to the esophagus. When us humans go to the pool and do flips in the water, we often get water stuck in our noses, and drips into our esophaguses. What I ...
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Does the spray of a skunk affect only mammals, or can it also affect birds, reptiles, amphibians, fish, or invertebrates?

The spray of a skunk is said to affect dogs, bears, and humans. Can it also affect other mammals or members of other groups of animals such as birds (other than the great horned owl, due to their poor ...
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3answers
147 views

Can elephants smell when they have water in their trunks?

For humans, humans cannot smell when they have water stuck in their noses. However, I am wondering if elephants can smell scents when they have water in their trunks, as they are designed to hold ...
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3answers
553 views

Identify this black dragonfly with a bright bluish-white band around its body

I took these photos around noon in late July in Hsinchu county Taiwan. This particular stick in this particular pond is visited by many dragonfly species. This one was very high energy and nervous but ...
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1answer
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Are these springtails and isopods?

G'day! I'm based in Victoria, Australia. I'm hoping to culture springtails for my terrariums, so I went out and tried to collect some. I found them underneath a rock, which was sitting on damp ground. ...
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1answer
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Do Termites and Silverfish metabolize cellulose the same way?

I am fascinated with silverfish and would like to understand more about their metabolism. I learned that they can survive on a diet of cotton which is nearly pure cellulose. Do they metabolize ...
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1answer
39 views

Asexual Reproduction Of sponges through endogenous or exogenous budding?

I was studying asexual reproduction in sponges and came across two website Wikipedia of Gemmule and there is a line.... Only Endogenous Types of Buds develop into New Sponges. Then as I was reading ...
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Brown spider in New Hampshire White Mountains area found in sheltered areas around house

Found this light brown spider in sheltered locations outside my home in Franconia, New Hampshire. Should I be concerned about its presence and the dozens of others?
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1answer
135 views

Why do dragonflies lose all of their coloration once they die?

At 06:43 in The Secrets of Nature video Sky Hunters, The World of the Dragonfly - The Secrets of Nature the narrator says: Scientists have been collecting ...
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1answer
139 views

What is the name of this sea creature?

I found this creature on the beach in San Diego. It is 8cm long and the end to the right is the mouth. The underside is exactly the same as what is visible. What is the name of this species.
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35 views

Why large snakes are mostly non-venomous?

Wikipedia has a list of largest snakes. In this table, there are 11 species of snakes, five of which are boidae and the rest are pythonidae. These two families of snakes are both non-venomous. I ...
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1answer
69 views

What kind of soil-dwelling flying insect is this?

In the UK. They are roughly 1.5mm long, appear to crawl much more than fly, and seem to live in the soil of indoor potted plants. They are fast and tiny, so apologies for very shallow DOF. The first ...
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1answer
35 views

Is there alternation of generations in animals other than cnidarians?

Are there other animals besides cnidarians that exhibit alternation of generations (having distinct sexual and asexual life stages)? If so, what are these animals? Further, why do so few animals have ...
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1answer
38 views

Are intestinal and pancreatic lipases different?

For explaining the action pancreatic lipase, my book wrote this equation:- $$fat\space particles + lipase\rightarrow fatty\space acid + glycerol + lipase$$ But for intestinal lipase, my book has a ...
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1answer
38 views

What species is this interestingly colored brown moth

This fella fluttered into a kitchen at night, maybe from the vegetation in the yard, and I got lucky to trap it in a transparent plastic bag for a while (with enough room to move, which it started ...

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