Hi Sydney,
In general pictures of pets are winners, chocolate box and calendar shots, and yours are no exception.
I agree with the others about the sepia cat. Number 4, cat in colour, is so much nicer and you've got the eyes very well, with little catch lights.
In #2 the drops of water (?) are untidy. Not much you could have done about it though.
In #3 I can't take my eyes off the stream of water coming from the scruffy one's ears. It looks more in focus than the dogs and is a real distraction. Still a nice shot though.
BTW, it would be useful if you could post shooting info. with the pics - aperture, shutter speed, focal length, etc.
Regards,
Stuart