I once perched on a wall with a desmodus while trying to get a good look at a yuti. Obviously, it saw me and roared and scared my bat but my bat didn't even move, he just stuck to the wall with the dark blurred fear effect or whatever. So if you are taming a yuti, I highly recommend a bat as you can also shoot off of them while flying or perched.
What makes a raptor deadly is it’s pounce attack, which renders the target similar to torpor unconcious for a few seconds( you will not gain torpor, but you will be helpless). During this timeframe a raptor can use its biting attacks while in the pounce stage to inflict serious damage to you and your armor. However, if you ride a medium/large mount, you can negate the pounce, making the raptor a nuisance rather than a killing machine.