Another Prehistoric mob

Rauisuchian mob similar to postosuchus or Fasolasuchus that can go on two or four legs. As big as a Ghast but with an elongated body and tail, maybe tameable with meat, drops scales which can be crafted into armour with claws and dog armour too. Also drops bones and spawns in desert, swamp and mangrove biomes. Very rare mob. Could also ride it with saddle and leash it as well. I just think the game needs more reptiles and this would be a step in the right direction.