I mean.. they don't have socks do they?
2006-11-09 04:50:01 · 5 answers · asked by jack andrews 1 in Pets ➔ Birds
Antarctic birds and mammals - penguins, whales and seals - are warm blooded animals and they maintain similar internal body temperatures similar to warm blooded animals in any other climate zone - that is about 35-42�C (95-107�F). They have to keep high body temperatures to remain active. Tropical animals with more variable body temperatures such as reptiles and amphibians can warm up by basking in the sun if they cool down - and they never cool down that much. A large (bigger than a small insect) Antarctic animal will never get enough energy from the surroundings to become active if it allows itself to cool (there are exceptions at the other end of the size scale amongst very small insects and mites and in the fish) so they have to stay warm to be active.
The system that stops a penguin's foot from freezing is very elaborate and sophisticated and employs two mechanisms.
The first one allows the penguin to control the rate of blood flowing to its feet by varying the diameter of arterial vessels supplying the blood. In cold conditions the flow is reduced, when it is warm the flow increases.
The second mechanism takes the form of 'counter current heat exchangers' at the top of the legs. The arteries, which supply warm blood and oxygen to the penguin's feet break up into many small vessels which are closely linked to similar numbers of venous vessels bringing cold blood back from the feet. So, when heat is lost from the arterial vessels, the venous vessels running in the opposite direction pick it up and carry it back through the body, rather than out through the feet. This means that in the very remote regions of the skin, cells get oxygen but heat isn't lost through this skin.
2006-11-09 04:56:55 · answer #1 · answered by Anonymous · 4⤊ 0⤋
Penguins Feet
2016-11-12 22:05:56 · answer #2 · answered by disilvestro 4 · 0⤊ 0⤋
Because they are the spawn of the devil. See, everyone thinks they are cute and make fine subjects for a movie, but they are evil and are plotting to take over the world.
2006-11-09 04:59:52 · answer #3 · answered by ndmac 5 · 1⤊ 0⤋
I would guess probably not. Animals tend to be designed to cope with their natural habitats. I know that their feathers are slick so that the water slides off of them & they are more or less waterproof. Not sure about their tootsies though.
2016-03-17 06:48:41 · answer #4 · answered by Anonymous · 0⤊ 0⤋
I would guess that they dont have as many nerves in their feet.
2006-11-09 05:05:01 · answer #5 · answered by ♥♫♥ Crystal ♥♫♥ 4 · 0⤊ 0⤋