Phiomia

ATV

While it takes a while to level up enough to be viable, during the early game it can be a method of transport. If all points are put into movement speed, it does become decently quick. As a bonus it has a decent swim speed, equal to that of a player with no points in speed. Get a high level and it'll be able to maintain this speed for a while, with decent weight as well.(Level Speed exclusively)

Cargo

While they can't carry as much as some later-game mounts, they make good pack animals for early players (Level Health and Weight).

Fertilizer

A Phiomia produces more than other domesticated creatures. This makes them ideal animals to have when trying to maximize fertilizer production. Feed them Stimberries and they will produce a very high amount of feces

Level up: food

Torpor Tank

Having a high torpor for something their size, they can serve as a tank in the early-game for taking on either the tranquilizing dinos of the swamp, or for distracting a scorpion or spider while the owner takes care of the threat. (Level up Health).