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3
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1answer
25 views

Can sexual selection operate in temperature dependent sex determining organisms?

Or more broadly, are distinct forms of genetic inheritance (ie. sex chromosomes) needed for sexual selection? My thinking was that since there are no sex determining loci, there could not be linkage ...
10
votes
2answers
2k views

Do birds emit infrared?

I'm an electronics engineering student and I am going to use a sensor that detects infrared emitted by birds that invade rice paddies. My question is: Do birds emit infrared radiation? I know that ...
2
votes
0answers
36 views

Did modern alligators and caimans come from prehistoric crocodiles?

I know that crocodilians have been here since the time of the dinosaurs. I also know that crocodiles came first. But alligators have been here for a good 37 million years. Did alligators come from ...
10
votes
1answer
69 views

Can a lizard shed a regrown tail again?

Some lizards are famous for their ability to voluntarily shed their tail to elude predators (Autotomy). After a while, the tail will be regenerated, though with slightly different qualities, as ...
2
votes
1answer
26 views

Do Blanding's Turtles die of old age?

I have recently found articles and various claims that turtles (Blanding's turtles as an exact example) could possibly live indefinitely. http://discovermagazine.com/2002/jun/featturtle This is said ...
9
votes
1answer
581 views

If dinosaurs could have feathers, would they still be reptiles?

I just finished watching a video where it was mentioned that nowadays birds are dinosaurs and non-avians dinosaurs could have feathers. I confirmed this from wikipedia: Birds are highly advanced ...
5
votes
1answer
65 views

Can reptiles digest grains?

As a caretaker of a turtle, I sometimes struggle understanding the logic behind the inclusion of corn, soybean, and wheat meals in reptile food, such ingredients seem truly aberrant from what a ...
0
votes
0answers
69 views

Medical Uses of toxic venom

One interesting thing I recently learned is that venom has medical uses that can actually save lives! But from what I see so far this either applies to venoms from creatures that are not fatal to ...
1
vote
0answers
40 views

Do Parasaurolophus have hands with fingers to grab?

http://en.wikipedia.org/wiki/Parasaurolophus#mediaviewer/File:Parasaurolophus_cyrtocristatus.jpg I cannot tell if the hands have fingers strung together to form a hove, or fingers to grab. I have ...
4
votes
1answer
98 views

why reptiles still stimulate even after the death?

I saw a video in which a decapitated snake head still tried to bite. I also saw a video in which a man was hit by the moving tail of a dead crocodile. So why do reptiles move even after the death? ...
4
votes
1answer
38 views

Plural of “dibamus”

Migrated from English site. Dibamus is a genus of legless lizards in the family Dibamidae, of the infraorder Dibamia. Genera are usually given in singular, so what is the correct plural of ...
10
votes
3answers
1k views

Do snakes get dizzy?

I've seen snakes get captured in sacks and I've wondered if the snake would get dizzy if the sack were twirled around. I have not done any tests (and don't plan to) because snakes scare me.
5
votes
1answer
365 views

Are fish and reptilian scales homologous?

Wikipedia: Fish scales are dermally derived, specifically in the mesoderm. This fact distinguishes them from reptile scales paleontologically. So aren't reptilia scales also dermally derived?
1
vote
1answer
27 views

Which sex is homogametic in side-blotched lizards?

I'm just trying to find out whether the male side-blotched lizard is the hetero- or homogametic sex in side-blotched lizards (Uta stansburiana) - some reptiles are ZW system (female heterogamete) and ...
3
votes
1answer
806 views

What “emotions” can a snake feel?

Short: Thinking in particular of a Royal Python (US: Ball Python) such as some people keep as exotic companion animals, what sorts of "emotions" or "feelings" are they capable of? Long: ...
6
votes
1answer
166 views

What is this snake

I took a picture of this snake in Switzerland (Geneva Area): It looks to be an adder but cannot be sure about which species. In Switzerland we have two kinds of adder: Vipera berus Vipera aspis ...
1
vote
1answer
59 views

What's food mode?

I've been watching a The Crocodile Hunter episode about Komodo dragons, and Steve Irwing kept speaking about the animals being in "food mode", in which they apparently change their behavior to one of ...
2
votes
0answers
52 views

Can Infant Crocodiles digest Bread? [closed]

I'm just curious as to whether crocodiles and if you require specifics, saltwater crocodiles, could eat bread as infants. I was watching Lake Placid and I was curious as to whether infant saltwater ...