Dilophosarus [Mythical]
Trait: every ~13:53m opens its frills and spits out venom! The venom produced spreads to ~3 (capped at 5) other random pets, advancing cooldown by 40.82 seconds OR granting 570.48 xp.
Decent kg/size, random age
Safe, clean hatch not dupe/script
No mutation
Immediate Response
no/late response = study/sleep