Here are the different combinations to make an egg in Alchemy 2.

2x ant
2x bee
2x bird

2x butterfly
2x chameleon
2x chicken
2x crow
2x dinosaur
2x dragon
2x duck
2x eagle
2x fish
2x frog
2x hummingbird
2x lizard
2x moth
2x ostrich
2x owl
2x parrot
2x peacock
2x penguin
2x phoenix
2x pigeon
2x piranha
2x pterodactyl
2x scorpion
2x seagull
2x snake
2x spider
2x turtle
2x tyrannosaurus rex
2x vulture
2x woodpecker
container + life