Question about heredity Using a punnet square

Short is dominant over long hair in dogs. If a short haired dog whose mother was long haired is crossed with a long haired dog, what proportion of the offspring will be short haired?

I made a punnet square and got 50% would be short haired, I was curious if I have it correct,thanks.

It is 50%. The short-haired dog, Ss, produces S and s gametes. The long-haired dog, ss, produces only s gametes. So the Punnett square is:
_____s____
S___Ss___←short-hair dogs
s___ss____←long-hair dogs