My parents bought one because of their yellow Lab as well (plus the 2 cats)...the only thing to be careful of is when the pet really, REALLY digs the whole "furmination" experience and you accidentally remove too much hair. One of their cats loves it more than just about anything in the world and was so into it that I just kept brushing her until, without realizing it,
I inadvertantly overfurminated the poor thing. She now has a pink bald patch on her back.