The Basenji dog is the only dog that is not able to bark.
4
Cats sleep for 70% of their lives.
8
Rattlesnake mating sessions have been known to last more than 22 hours.
232
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
The oldest recorded elephant lived for 82 years.
213
It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
109