Flies are deaf.
379
The male gypsy moth can "smell" the virgin female gypsy moth from 1.8 miles away!
55
A cockroach will live nine days without it's head, before it starves to death.
26
Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
10
The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
2
The lifespan of mammals is about 1 and a half billion heartbeats.
127
A hedgehog's heart beats 300 times a minute on average!
14