If your looking for a tip to tame a kangaroo read this-

Things you will need to make a trap: (4 by 4 dimension) 8 stone foundations, 48 stone doorframes (or walls but i used doorframes), or instead of 48 doorframes/walls you can do 32 (I did 48 just to be safe so the creature can’t get out), rare flowers (you get them from the black stringy bushes in swamp biome, or from beaver dams), 2 wooden ramps

MAKE SURE YOU MAKE IT 1 WALL HIGH BEFORE YOU GET THE CREATURE IN! 1 wall high because you only have 2 ramps so the kangaroo doesn’t over-run the gap accidentally. When you finish building the first part, go near the kangaroo and make sure there aren’t any other creatures nearby and you are on a flying dino! Then when the coast is clear go near the kangaroo and eat the rare flower. You may have to eat more but eat 1 at a time! Make sure the creature is following you and make it stay right behind you, fly to the ramps on the trap and fly over it and the kangaroo should be right behind you and it should fall into the trap. Then knock it out and feed it wild mushrooms (you can get them from harvesting crystals, crystals are mostly found in the snow biome). Boom you have a kangaroo! ALSO RARE FLOWERS MAKE ALL WILD DINOS NEAR YOU ANGRY, PASSIVE (dinos that don’t attack you) OR NOT THEY WILL GO AFTER YOU ALSO AND START ATTACKING YOU