Why don't penguins' feet freeze?

Answer 1

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.

Answer 2

actually styce if you take the basic principal of water molecules they don't stop when they "freeze". the molecules are just really slow...like me. the hydrogen and oxygen molecules are faster when they are warmed or heated. which relates to your question. i think one of the reasons is that the penguins don't have any nerves on their feet. there movement is controlled with there legs (as well as the peanut brain...jk) it could also be an evolutionary process.

Answer 3

They have special shoes. Birds have special shoes too and are therefore able to sit on electric wires whereas bats don't and they get electrocuted (poor souls).

Answer 4

Because the are cold blooded birds.

Answer 5

because solids dont freeze

Answer 6

they have think skin and alot of fat