we could have sharks, tigers, bears, gators, AND/or lions. part 1

So we all know sharks and the other animals above are most likely NOT coming to minecraft. BUT, there is a loophole that works. 

SHARKS

these neutral mobs are found in every ocean biome, and they attack when provoked. Their attack style is similar to the nautilus, where it does a quick bite and swims away. The shark drops nothing, so its useless to kill, but you will most likely find them killing drowned. They also have another use. When they scratch their body on a coral block, in an ocean biome, (for getting an itch), 90% of the time, the coral block stays the same. But, 10% of the time, it polishes the coral for a new block.

GATORS(for my home state of florida)

Similar to the shark, this is a neutral mob. Its attack style is a bit different. When hunting for fish, it floats with its eyes and snout above the water. If you step on it, it pulls you down. And baby gators drop a gator scute when it grows up. If you surround a froglight with this stuff, it textures the froglight. And also, like real life, it pick up their babies in its mouth to carry them around.

TIGERS

This one was hard to find a no-kill use for, but i found one. When it is sitting at night, in the jungle, it paralyzes any lower tier mobs(zombies, skellies, creepers) in a 6x6 block radius. And this mob will pounce when you are near its child(like the polar bear). So, mojang and other players, let me know about these mobs. I didnt have space for the other 2 mobs, so part 2 soon.