define "hits on"
my girl is extremely playful with everyone, she tried to sort-of-mount (tried to slam her pelvis against her leg while on all fours) a guest once too. one of the boys is very playful too and tries to hump everyone and everything despite being neutered. the other boy is along the lines of "rip and tear" with strangers so i'm not so sure about him, his last "owners" forgot to socialize him, like at all.
what i'm trying to get at is, attempted mounting doesn't necessarily mean "i wanna tap that". from my perspective of having four dogs so far it just seems like something they just do sometimes when playing..