An authority on jungle beasts says that almost all animals with spotted or striped fur are somewhat solitary.
Most, but not all, hibernators wake up when their body temperatures drop below freezing. They do whatever it takes to hike temperatures all the way back to normal. Then they go back to sleep.
If it has no vertebrae, it has no liver.
Most predators attack at head level.
In the animal world, the weaker the critter, the more offspring it produces...generally.
No statistic suggests that any animal in the wild ever dies of “old age.”
More than 90 percent of the earth's animals have no backbone.
The London Zoo employs an “Entertainment Director” for the animals.
The body has 70,000 miles of blood vessels and about 30 trillion red blood cells.