You know all of the predators, right? Maybe we should add some more. Maybe 1 new predator for each biome just to make Niche harder. I have suggestions on predators for each biome. The Niche-Makers can't do all the work.
Grassland- Wolf: Abilities: 5 speed, 6 smelling, 3 sight, 5 hearing, 2 attack, 15 day lifespan, 0 defense, drops 5 food when killed
Jungle- Python: Abilities: 0 hearing, 5 sight, 7 smelling , 2 damage per day (Unable to make Nichelings bleed) and it stuns Nichelings by squeezing a Nicheling under 3 gems. They only can move in trees, so maybe new jungle trees would help this situation, drops 15 food when killed, 30 day lifespan
Arctic (Sorry. Had to make the arctic even harder) - Alpha Ramfox: Abilities: 2 speed, 4 strength, 6 sight, drops two food when killed, and makes the Ramfoxes split up, unless they're targeting the same Nicheling
Savannah (Am I spelling that right?)- Dingo: Abilities: 5 speed, 5 smelling, 3 sight, 2 attack, 15 day lifespan, 0 defense, drops 6 food when killed
Swamp- Crocodile: Abilities: 3 sight, 1 damage, stuns Nicheling and brings them underwater, can only move in water, therefor, being able to move up rivers, and can only attack a Nicheling close to water, can only be killed by a Nicheling underwater breathing, because the crocodiles won't find them tasteful. drops 15 food when killed
Whale Island- Killer Hawk: Abilities: Flies and attacks Nichelings in trees, can be killed the same way Bluebirds can. Gives 20 food when killed