Build two stone foundations with stone door frames on every side but leave one side open and get the creature to chase you into the pin then simply place the last doorframe on the open space and he is trapped then just continue to take it.
For beginners these things will spot you in a split of a second so don’t even think of going up to it with a stimberry in your hot bar. Instead, get a ghille suit and sneak behind it and feed it a beer! Don’t use stimberries it is pain And time consuming unless you have a bush of stimberries. They eat berries after they are tamed though. Not beer.