Predators and their prey shouldn't coexist on the same world map spot. If a rabbit or bird spawns where a wolf or cat is, the wolf or cat should kill it. If a wolf or cat spawns where a prey animal is (or wanders onto a spot with a prey animal), the prey animal should flee to another spot. Prey animals should never randomly wander onto a spot with a predator (prey rarely choose to approach predators).

Yes, this is vitally important. As cute as it is to see a wolf, a bunny and three birds having a tea party together, newbies will undoubtedly be confused and disoriented and may just leave the mud forever.