Absolutely disgusting. However, people seem to feel sorry for "big" animals and animals human's are attached to more than smaller animals.
I mean, whan I was younger I've put salt on snails, put a deodorant flame thrower on flies, pulled off wings etc. I know it doesn't seem so bad- but it's similar I suppose, and many people (mainly kids) do such things.
Ponteh does have a point though- I suppose with bigger animals there's the thought of "lets f**king kick it in!" which is horrible. Can't believe the bloke just watched!