Paracers spawn in the swamps and redwoods, so it's a good idea to find one near your house since you can't pick them up with a quetzal. Try to lure one out of the swamp or redwoods and stand on a cliff to shoot it with tranqs because you don't want to stay in those biomes for long, if you do, you're done for.

More Paraceratherium Taming & KO Tips