Why cant Buddhists eat pork?

Well, they can eat pork. Nothing bad happens to them if they do.

You probably mean "Why are they not allowed or supposed to eat pork"

As far as I know there is no strict rule that fobids Buddhists to eat pork or meat. Some just don´t like to eat meat because they don´t want to hurt animals.

Muslim religion , however, has a strict rule against eating pork. Pigs are considered unclean.