Anyone know why scuttlecrab sometimes spawns with 800hp and sometimes with 1060hp?

I've been playing alot of jungle lately in ranked. My usual route is to start bot side, take two camps then aim to get dragonside scuttlecrab. I noticed though that sometimes it spawn with 800hp and sometimes with 1060hp. Keep in mind this is at the very beginning of the game when the scuttlecrab First spawns, so there's no way it has been killed before. So yeah anyone know why this is and when it happens? It would be helpful to know. I submitted a request and did the 'ask-riot' thing but got nothing back.