A sexually active canine.
This term is commonly used in the "furry fandom."
"That pooch is a total horn-dog!"
by Dalhusky August 28, 2006
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A sexual predator (think Harvey Weinstein, Donald Trump, Roger Ailes or Matt Lauer) who keeps a respectable or high-profile job. But, of course, it only takes one (or, several) to blow their cover.
I can’t believe that anyone thinks that horn dog would make a good President. He boasts on TV about grabbing women by their pussy.

#MeToo has exposed all the horn dogs sniffing around Hollywood.

That horn dog should be in jail, not promoted.
by The Real Canadian July 8, 2021
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The sexual urges one feels when one is on ecstasy. See mad dog.
Rob has been sniffing around that girl all night. He has been bitten by the horn dog for sure.
by Dwaine Howe July 12, 2008
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someone who is gross and super horny.
girl one: you know that guy alexander?
girl two: oh yeah, stay away. he’s a horn dog.
by garlicbreadsam July 26, 2020
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A guy who follows his dick rather than his heart.
He only talks to her because she's thick. What a horn dog.
by Feminazi101 June 6, 2017
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A man or woman who check out people who aren't attractive. Likes checking out small boobs and flat asses.
Sam: Oh my god look at Julia's ass
Andrew: Yo that chick ain't even hot.
Sam: She has an ass
Andrew: No she doesn't
John: She doesn't, Sam.
Andrew: Dude you're such a horn dog.
by Musicgod14 December 8, 2013
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