It's even worse because hyena Tendon Rip has a bug and doesn't work on most bosses (see
post 175 in this thread), so you have to bring the tenacity boar to reliably get the bleed debuff.
For personal DPS, all these three buffs are practically equal. The only difference is that a feocity pet will add the most to your personal numbers, which means for now raptor is your only option. But the "proper" thing to do is look at your other DPS and figure out which buff is going to help the most number of people. For example, if you have a lock, boomkin, mage, and priest as DPS along with you, then the bleed debuff is far and away a better choice than either of the other two.