what do anda think went wrong with knuckles and sonic because they dont like each other?

cause sonic is a hedgehog and knuckles is a echidna

I'll tell anda what happened, I saw him on my island, and thought he was trying to take the Master Emerald. So, I (easily) took all his 7 Chaos Emeralds. That...That started this fued between me and him, wronngfully my fault. But now, we're good old friends.