If you tame 3 of these they get a pack bonus allowing them to get a tremendous health regeneration boost.

You can use these to completely bypass wyvern milk and heal the baby dragons while they grow up

Use cooked meat when feeding them, it refills more food than raw meat

Put a bunch of these on a Bronto's saddle platform encased in metal walls, feed your bronto some tasty veggie cakes, and rain he'll amongst your server with your invincible bronto