[Jewels1091]

"In biology, there is a general rule of thumb that animals tend to become smaller in warmer climates"

Someone should tell that to the African elephant!

[BradyLS]

Giraffes, Rhinos, and Hippos asked to be on the memo list, too.

[gundog]

The rule applies to species. Whitetail deer are much smaller in their southern ranges than the northern. Reason: ability to retain heat. Volume increases as a cube...taller, wider animals increase volume relative to surface area...don’t radiate as much heat.