Lobsters have blue blood.
476
Alligators can live up to 100 years.
337
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
Cats and dogs can hear ultrasound.
350
Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
13
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
Female kangaroos have three vaginas.
2