Easy tame:it will take 2 minute do then you can feed him without agro him. Get 1 wood foundation 3 thatch door frame 18 thatch wall 1 wooden hole Window 1 ladder pull place the foundation and door frame 1 way open hit the giga and run inside make him chase you then replace the frames with walls replace thatc walls if it get close to black,don't let him destroy when he stop hiting place the roof and ladder go near walls if you can feed him through or from top of the building don't fall inside
It literally only took me an hour to tame a level 145 with only 50 mejoberries.
1. Gather berries and put the berries in your last slot
2. Kneel down and walk up to one of them and feed it the berries
3. Now you just follow it around while kneeling down and feeding it berries whenever it's hungry
4. Congratulations you tamed one.
Since they're commonly found in the red wood forest, I recommend only taming one if you're close to water as if you get attacked by something you can jump into the water to get away. Then when you think it's safe just go find your monkey and go back to following/feeding it.