I'm testing, and apparently with a Wyvern we can't farm meat from a dino

why can this happen? Is it something in the configuration that I have wrong?

i think it's the "C" button that farms meat from a dino with the Wyvern. Right click is the breath, left click is a swiping bite, and I think C is the buffet / down bite. Though it's been a looooong time since I got on my wyvern and flown it to test.