I've had four dogs - one found abandoned in a campground and 3 from the humane society. All four would happily hop in a canoe and, despite their 50-60 lbs, didn't upset the balance. The bummer is that my current dog barks or whines the entire time. She knows the "quiet" command but the only place it doesn't work is in a canoe. I can't tell if she's overly excited or has anxiety. I've tried long walks and sessions of tossing a stick in the water for her to retrieve, hoping to wear her out before launching but nothing stops the whining. I've tried frequent stops to let her get out and explore an island and swim and she eagerly hops back in the canoe when it's time to move on but then she starts whining again. If it's just excitement I'd keep bringing her along but I'm concerned it's anxiety. Besides worrying that she's anxious I also don't want her whining to break the silence of the river, especially when I'm paddling with friends. It's a bummer to have to leave her home.