Edit: Nevermind I mixed up Jeremy and the other guy ... ignore my post
Bug and Wheel do it too and both are easy to come by. since there are different breedclasses for bugs (3 or 4 I think), you may want a H/S with 276str/289spd (its important to be faster then the Dino, but strong enough for the squid, keep in mind there are other Bugs with HS breed that are not as strong).
Take the Bug (Creepy Crawly maybe):
- Flank (Squid dies)
- Swarm (Bug dies, the Dino has 2 rounds of debuff)
Iron Starlette in
- wind up
- wind up (Dino dies, Cow comes in)
- wind up
- wind up (thats a dead cow)
or do only one powerball vs the cow, then second wind up und finish the wheel by using powerballs (it dies with the cow having around 200 hp left), finish with a lvl pet that does at least this 200 damage (cow will heal next round).
Very safe strategy for leveling at Feasel, it only fails if the squids whirlpool crits (happened only about 1 or 2 times for me since he is accessable).