I hope I'm not mixing up movies I have seen, but I remember seeing some movie when I was a kid. I was born in 1978, so I'm thinking it was an 80s or early 90s movie. I'm from Canada if that helps.
What I kind of remember happening is some asteroid or very vague looking craft crashes to Earth in a small town. Some teenagers find it and go inside. They find some alien eggs and trash/destroy all but one egg. Some other kid finds the egg and takes it, which then hatches. The kid becomes friends with this alien. Then the parent of the alien goes on a murderous rampage, killing those that destroyed the eggs and trying to find its offspring.
I'm starting to wonder if it was just some weird dream I had or something.