My cat weighs in at 7.5 pounds... she steers clear of raccoons. They don't seem to go out of their way to bother her though, I just worry about stuff they carry. One I trapped must have had 10 ticks on each ear.
Coons will drown dogs if they can get them to come into the water. A raccoon will get on a stump or log and push the dogs head under water if it swims out to them, they are really smart...
Going to bait a trap now... if I catch one, I'll carry it off. The grand daughters are here...
J