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
Bats sleep 18-20 hours per day.
5
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
Penguins have a gland above their eye that turns saltwater into freshwater.
12
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19