This subject raises the whole question about what we, as supposed caring humans, consider as a "pet" and what we consider as just another animal. For example, a lot of people on this site use what some people consider as their "pets", ie their fishy friends, to feed THEIR fish. (Using Guppys and Convicts to feed your predatory fish).
Many other countries around the world eat animals that we would consider a pet, or would never think of eating, e.g. horses and dogs. A lot of the fish we keep are someones dinner in their country of origin!
A similar question arises with the whole vegetarian, meat is murder, "animals have feelings too" debate.
Having grown up on a pig farm, I have seen both sides of this argument, my simple answer to it is the straighforward fact that humans are omnivores and we are designed to eat both meat and veg - just look at our teeth!
In this case, the animals would not exist, would not have been bred and reared, if they were not going to be eaten by human beings.
I in no way condone the actions descibed previously, real or not, but is it just another example of the different views that people have of animals?
I personally would consider such action as gross and cruel, but is that because it truly IS gross and cruel, or just my viewpoint based on the morality of my upbringing and experience?