When a baby roll rat pops out, leave it on wondering because it will gather berries, feeding itself. As long as there are bushes it can access, and it can't escape its enclosure, it will raise itself making it one of the easiest tames to raise. All you have to do is imprint!
Great tame for getting around the map I would recommend taming one and using it to quickly run out of a rock drakes nest as it will help a tone in doing so due to the roll rats fast speed to turn into a rolling machine in turn too get this, 'roll' away it's a good all-around mount just be careful near ledges and you should be good to go!(Ps looks saggy bag of potatoes he/she is not hard to spot) he/she is also very territorial over his gems so steal them if you have 130% movement speed.
The roll rat’s roll is by far one of the fastest (and most enjoyable) ways to get around by land, although the terrible turning radius makes it less maneuverable. It also completely demolished Wooden structures, making it very powerful for early-game pvp. Add that to the fact that it is Aberration’s only wood-gatherer, and the roll rat is a must-have for any tribe on any mode.