Dogs sometimes fake being sick to get attention.
26
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
The seahorse is the only fish to have a neck.
12
A giraffe's kick is so powerful that it can decapitate a lion.
216