Multiplication Chart for Cats
A pair of uncontrolled breeding cats - a male and a female - could easily create the following:-

Two litters a year at a survival rate of 2.8 kittens per litter, and then with the continual uncontrolled breeding of offspring after offspring.....

Year 1  =  12 cats
Year 2  =  66 cats
Year 3  =  2,201 cats
Year 4  =  3,822 cats
Year 5  =  12,680 cats

Multiplying to a staggering 80,399,780 cats in Year 10!