Cows can sleep standing up, but they can only dream lying down.
745
The octopus does not have a blind spot.
273
The male seahorse carries babies and 'gives birth' to them instead of the female.
7
One in three dog owners say they have talked to their pets on the phone.
427
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217