Dogs sometimes fake being sick to get attention.
26
A scorpion can hold its breath for up to 6 days.
19
Rattlesnake mating sessions have been known to last more than 22 hours.
232
Dolphins have names for one another.
18
Sergeant Stubby was the only war dog to be promoted to sergeant through combat in WWI. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and even once caught a German spy by the seat of his pants, holding him there until American Soldiers found him.
16
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255