113 Answered Questions for the topic zoology

04/28/19

Do insects' muscles become stronger with exercise?
I am curious to know if insect muscles become stronger with exercise, because I have seen many insects get tired out, but I have never seen one get stronger. They always seem to become permanently... more
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Zoology

04/24/19

Do the majority of fish lack scales on their heads?
Based on pictures, it seems to me that a vast majority of fish species that have scales do NOT have scales on their heads. **Is that fact true?** To make this properly answerable: - lets'... more
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04/22/19

Example of species that went extinct because of excessive hunting by non-humanoid predators?
I was wondering if there were any species that went extinct for being excessively hunted/eaten by predators? I don't mean human hunting. For example, I wish to know if there's a species of frog... more
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04/22/19

Why does the butterfly have a cocoon stage in its life cycle?
Why does the butterfly have a cocoon stage in its life cycle? It could have simply grown up within the egg/cocoon, and emerged as a butterfly. Instead it is first an egg, then a worm, then a... more
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04/21/19

Why is the species-diversity of deadly parasites greatest in the tropics?
There are so many parasites living in tropical regions of Africa, South America, or Asia, but very few in Europe or North America. Is this due to climate, or are there other reasons? Many of the... more
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04/20/19

Are humans the only animal that requires "clean water"?
I've seen a number of animals - dogs, cats, squirrels, ducks and geese, etc drink from puddles, some of them were muddy, others had green flora growing under water. Same goes for lakes and rivers.... more
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Zoology

04/20/19

Anatomical differences between herbivores and omnivores?
What are differences of herbivores vs omnivores? I do not mean dietary differences (obviously), but physical ones. E.g., afaik herbivores have a much longer digestive tract than carnivores; then... more
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Zoology Ecology

04/20/19

Why are flies not scared when landing on a monitor with changing graphics?
I have been wondering why would insects in general, not be scared when important changes happen on your monitor where they have landed... If you move even just a finger, they are *scared to death*... more
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04/19/19

How best to count bees entering and leaving a hive to measure hive activity?
This is my first question here, so I apologize for all mistakes I could have possibly made. I'm a high school student in East-Central Europe and I need to complete some research for a biology... more
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04/18/19

Why do we have no enzyme to digest cellulose?
As we know, cellulose is the most abundant polysaccharide in nature. Why don't we have an enzyme to digest cellulose?
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04/16/19

How do baby animals that primarily subsist on cellulose get their initial gut flora?
In the case of mammals like giraffes and koalas, is that bacteria common on the plants they eat so when a baby starts to try to stick something besides its mother's milk in its mouth, it can't... more
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04/12/19

Are there species that occupy several roles in the food hierarchy?
Are there species that occupy several roles in the food hierarchy? By role, I am referring to producer, primary consumer, secondary consumer, tertiary consumer, quaternary consumer and so... more
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Zoology

04/12/19

Horns in animals and birds?
Are there any carnivores with horns (whether extinct or currently alive)? Do any flying creatures have horns? By horns I mean horn like structure.
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Zoology

04/12/19

Where are the gastralia (stomach ribs) attached?
Crocodiles and some dinosaurs have a second set of ribs between the sternum and pelvis called [gastralia](https://en.wikipedia.org/wiki/Gastralium). Where are the gastralia attached to the rest of... more
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04/12/19

Do mosquitos excrete blood?
Since insects like mosquitos ingest only blood, and insects generally excrete their solid and liquid waste [at the same time](https://www.youtube.com/watch?v=6a8psEYgopw) as... more
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04/09/19

animal communication can be used to illustrate evolution by natural selection
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Zoology

04/07/19

How does horse extract the energy to needs from a relatively small digestive system?
Recently I saw Inside nature's gaints episode on horse, and was fascinated about its internal organisation. And my question is that they have a very large lungs to accommodate, but a relatively... more
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04/04/19

If all animals were to die, would all plants die too?
Humans and many other animals are able to breathe because plants produce more oxygen than they need. I was thinking if all animals died all of a sudden, then wouldn't plants die too. Eventually... more
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04/04/19

Are some people more 'attractive' to mosquitos? If so, is that a hereditary trait?
Mosquitos clearly love me-- but I have been told I am just more reactive to mosquito bites. Are some people more 'attractive' to mosquitos (get bit more)? Or is it just that they are more reactive?... more
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Zoology

04/04/19

What limits the size of fish compared to marine mammals?
The largest extant fish species is the whale shark (*Rhincodon typus*). With a length of 13 meters and a mass of about 20-30 metric tons, the whale shark is relatively small compared to the largest... more
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04/03/19

Why did a lot of common insects evolve such a thin waist?
Something that doesn't quite make sense to me is why lots of insects like ants, bees and wasps have a such a small petiole when it connects many major organs to the rest of their body from a... more
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03/30/19

Was the recent "conservation hunt" of a black rhino supported by science?
CNN [recently covered](http://www.cnn.com/2015/05/19/africa/namibia-rhino-hunt/) a sanctioned black rhino hunt in Namibia by Texan Corey Knowlton, who bid US$350,000 for the license. In the story,... more
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Zoology

03/29/19

Can HIV be transmitted via mosquitos?
It is known that HIV is usually transmitted by direct blood or body fluid contact between an infected individual and a healthy person (like blood transfusion or needle sharing): Suppose a mosquito... more
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03/27/19

How do insects breathe?
Do ants even breathe? If they don't, how do they stay alive? On what resources do they depend upon to stay alive? How are they different form mammals?
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Zoology

03/27/19

What is the anatomical term for a two jointed leg?
Allow me to apologize in advance for the layman's terminology. I'm wondering what the anatomical term for a cat- or a goat-style hind leg is. Cats, goats, t-rexes, and many many other animals... more
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