its just someones silly comment on some random web page i found while looking up seals and sea lions...
well it made me laugh anyway 
keep reading the whole page lol
http://www.halfbakery.com/idea/Seal_20Dog
This is probably not going to be a popular idea.
Dogs are an extremely variable species, probably partly because of what humans have done to them. There are, however, many genetic variations in dogs which are not encouraged, probably because they appear to serve no human purpose or are bad for the animal's health. Here are three possible variations: short legs (as in Dachshund), baldness (maybe not in dogs but as in sphinx cats, and cats are of course related, so it wouldn't be surprising if dogs had the genes too) and obesity. Combine these features in a breeding programme and you would eventually get, without directly manipulating DNA, a very seal-like dog that could actually be amphibious. It would be streamlined due to obesity and hairlessness, insulated from the water by subcutaneous fat, and able to swim well due to flipper-like limbs. However, it would lack a diving reflex, probably wouldn't eat fish, and would doubtless be unpopular at dog shows. Concerning its health, it might very well have various problems, but this is currently true of pedigree dogs in any case, and unlike those (and i'm not thinking of working dogs), this sort of breeding would be of direct benefit to the animal itself.[/b]
