I agree with above. Anything might be possible.
I have a lab mixed with ?
We actually found him as a pup on the way back from duck hunting 3 years ago. Turns out he is a great pheasant dog and even points. Retrieves really well on land, but has disappointed as a water dog. He has shorter hair than labs, and flat out does not go for jumping in freezing water.

My brother had a lab mixed with newfoundland that was the most fearless and unstopable retriever I've personally ever seen.

So who knows... I like dogs...I'd probably take the chance, myself.
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"It's NOT that much farther than the Cowlitz!"

"I fish, therefore someone else must tend the cooler!"