Please help me remember the title of this BL Manga

I don't know if it falls under the BL Category (maybe it's Shounen Ai, cause I don’t remember seeing any s*x scene). The main characters have Animal characteristics (Basically Cat × Lizard) who are School Boys. All the other boys are animals too. The Lizard boy was being bullied in his previous school (there was a scene of him detaching his tail off) and moved to the school, the cat boy was going in. They quickly become close friends but the Cat boy got extremely possessive of him to the point he gets mad at lizard boy for showing his tail to other students while hanging out on the staircase.