Here are the most common words for animal groups:
1. a colony of ants :
2. a swarm of bees/flies/moths/butterflies :
3.a flock of birds/geese:
4.a herd of cattle/elephants/goats/pigs/sheep:
5.a pack of dogs/wolves:
6.a colony of rabbits:
7.a school of fish:
8.a pride of lions:
9.a nest of snakes:
10.a litter of puppies/kittens/other young animals: