Dolphins, tho 'cute', are carnivorous mammals. As such, they should not be expected to not kill stuff.
Ever seen a pod of migrant orca on the prowl? There was a documentary about orcas on some wildlife channel not to long ago. Part of it showed a pod
of these transient orcas hunting. They came upon a mother whale and its calf. They gave chase and surrounded it. The calf and mother maintained
close proximity, not leavinga gap between them. The orcas started to force themselves between the mother and small calf. Eventually they seperated.
The process took a long long time. The mother, unable to do anything once they were seperated, swam off, abandoning the calf. The exhasted calf
faced the orcas along. They attacked, by trying to drown it. They'd rush and push out of the water in gangs jumping onto it, pushing it under the
water. THis too went on for a long period of time. The impacts and shoving and drowning attemps started to result in blood loss, lots. Finally, the
calf was suffocated/drowned.
The result? The orcas ate the tounge and the flesh of the lower jaw. Nothing else.
They were't doing it out of hunger. They were showing their killer pups how to attack and keeping up their own skills.
Violent little beasts no?