A few months ago we adopted a rescue cat that is roughly one and half to two years old. We have had many cats ove the years but, never a cat with such huge fangs. I'm wondering is this a medical condition or just do to genetics of a particular breed?

i have a kitten who is very hyper and full of energy.my bf has a older cat about 7 yrs old and hides most of the day and comes out at night. the kitten seems to always pouncing her and following the older cat everywhere.wondering if it is normal. she also seems to not let my bfs cat spend time with him and is upsetting my bf..he seems to think the kitten is trying to be dominate the older cat and is acting like she is the only cat in the house....i think personally the kitten just wants to play with the older cat and doesnt understand the older cat really doesnt play. what should i do..also the older cat has started to act not normal. her fur feels coarse and is throwing up right after eating.