I take 3 of these, with my Yturanus and a multitude of Rexes, and fill them up with cheap kibble (dodo/dilo). I then proceed on epic boss fights. You won't really lose any Dinos. The pigs may be hungry, though.
They heal any tamed Dino nearby at the cost of food. Get a whole large pack of Daedons made up of pack leaders and you will be very well protected and since they can heal each other one of your daedons will rarely die. Upv0te if ya found helpful.