Why is my pet crab not mating with my pet lobster?
Because a crab is not a lobster, and a lobster is not a crab.
No. Same as trying to get your dog and cat to mate.
M'aiq The liar
No, it's possible. But they may have no chemistry. For example, crabs really like siracha but lobsters hate spicy foods. Crabs love sports but lobsters prefer documentaries.