Terrosaur is a dinosaur found in Dyno Dig Oasis.
Terrosaur has many nicknames, including 'King Dyno', 'Sharp Teeth' and 'Big Poppa T'.
Terrosaur seems to be a Tyrannosaurus Rex-type Pet with extremely large legs and tiny little arms, with spikes on its head and red stripes on the back,and arms.
- Terrosaur is one of the few Dyno Pets in Prodigy.
- Only members can catch it.
- It is another pet that can learn Magic Spells.