Dogs sometimes fake being sick to get attention.
26
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
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
The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
2
In 1955, the citizens of São Paulo were so upset with their government that they elected a rhinoceros named Cacareco (meaning rubbish) to the city council in protest, with over 100,000 votes.
18
Dolphins have names for one another.
18
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Baks the blind boxer has a seeing eye goose named Buttons; a four-year-old goose who leads the pup around everywhere either by hanging onto him with her neck, or by honking to tell him which way to go.
16