Dont listen to all that get someone to pick you up
And stand on a tall rock crap just hop into the swamp with a cross bow or a normal bow let it grab you and then just shoot tranqs down its throat and murder any narcos with a trike and you have your self a kapri btw you can usually get away with this strategy with lvl 1 to 80ish but anything higher you may die btw have a decent amount of health so it does not just chomp you in 5 seconds
When they leap at you it's hard to see where they go, I recommend finding a corner and staying there until it leaps then bola and either kill or knockout. This always works for me when I'm trying to tame one but another tip, just stay out the swamps
These tames are good to defend your base leave several on the setting to attack anyone attacking your base because they can jump and dismount attacker I left some on the roof and they picked attackers off there flying tames and my turrets did the rest
This will only work if, 1, the kaprosuchus is low level, 2,you are a high level, so when the kaprosuchus grabs you, punch it out, it works, make sure you aren’t near any mean creatures, or it will die, hope you can do it!