The burrow is a passive tame. A lot of people say you need ghilli to tame them but you don't. I tame them with my tek suit on. Just crouch and approach them slowly, have superior kibble in your last slot on the right of your hot bar. When you see the feed burrow in blue hit the triangle button to feed it (Ps5) Quickly back away as they will teleport and you will get blinded by sand, track it and wait for it to become hungry again. Rinse and repeat