Animals and body heat : how they survive

Most living beings emit body heat. That heat allows organs to function. But some cold-blooded animals function differently. How do these survive? In the animal and human kingdoms, body heat is an indication of life.…

American Black Bear. Lincoln Park Zoo mammal. 1900.

How wild animals survive in cities

Nowadays, most species of wild animals have been tamed to a degree. Lots of us have cats or dogs, we eat cattle meat, we ride horses, some of us have somewhat exotic pets like parrots…