VIRGINIA OPOSSUM
9.
(Didelphis virginiana)
Perhaps no animal exemplifies the underdog as well as the opossum which has been doing a bang-up job of making more possums for 70 million years. Studies have shown opossums to have better memories than rats, dogs, cats, and pigs! They are almost completely immune to snake venom, and they clean themselves constantly, so they are basically odorless. They also have the greatest number of teeth of any land mammal: 50 of them. Razor sharp!