Possible Combinations:
Prairie + Any
Lion + Squid
Lion + Leopard
Leopard + Zebra
Lion + Zebra
Zebra + Sun*
Zebra + Moon
Shark + Zebra
Zebra + Chinchilly**
Zebra + Seafoam
Wildebeest + Chameleon
Wildebeest + Butterfly
Frog + Wildebeest
Wildebeest + Squid
Wildebeest + Lion
Wildebeest + Paradise
Time: ??
*You must put the Zebra on the left and the Sun on the right or it won't work
**You must put the Zebra on the left and the Chinchilly on the right, or it won't work