Some lions mate over 50 times a day.
61
Cats make over 100 different vocal sounds; dogs can make about ten.
26
One litter of kittens can be produced by more than one father.
57
A chicken will lay bigger and stronger eggs if you change the lighting in such a way as to make them think a day is 28 hours long!
37
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Ants make up 1/10 of the total world animal tissue. The total biomass of all the ants on Earth is about equal to the total biomass of all the people.
85
The most yolks ever found in one chicken egg was nine.
163
An ant brain has about 250 000 brain cells. A human brain has 10,000 million so a colony of 40,000 ants has collectively the same size brain as a human.
118