I found some on the edge of the snow biome west side next to the place with the never ending war but be careful there are allos, rexes, raptors, scorpions, carnos, argies and sometimes a sarco but if you have a flying mount you’ll be right
Nothing quite sucks as much as losing a good tame because you had outdated information.
They CAN NO LONGER BE PICKED UP by Argy, knocked out or not.
Don't do my mistake and don't waste your time trying to pick up your knocked out procoptodon, just build that spike fence before something attacks!!
I find it useful if you pump nothing but weight and then harvest metal with it, just put yourself in the pouch and have a friend walk up to metal nodes, then you can harvest metal without even leaving the pouch!