Yep, totally normal - it's just the instinct we all have as animals. I mean, I hump stuffed animals ALL THE TIME, it's ridic. Okay, no...just kidding

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But seriously, 3 out of my 4 dogs hump. Wylie and Marcel have a stuffed "lover dog" they have dates with. Our girl, Pfeiffer, humps her round bed - it's so freakin' cute.
I don't believe in discouraging this behavior since it's instinctual and since it seems to be a need of theirs. It would be different if they were trying to hump humans, that I would stop and redirect. But I'm totally fine w/ them having their love sessions with their lover dogs and beds

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