I know someone with a longhaired brindle Mastiff. (purebred Mastiff (she got him from a Mastiff breeder).. not Tibetan Mastiff.. he's not as fluffy and he actually looks like a Mastiff)

I've seen a long-haired Rottie twice. (think it was the same dog) Pretty dog

I've also seen a Pit/Sheltie Imagine a sable and white medium-haired Sheltie with a HUUUGGE head O_O

There are also long-haired whippets!
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