Yes
There’s not room for them to perch on the lip of the dog bowl. However, they can still hop up to the top of the green waterer, so not 100% stopping them, just discouraging.
I’m wondering how that could be arranged without disrupting the vacuum that keeps the water from pouring out the bottom holes? I still think horizontal nipples is the way to go.
And speaking of vacuum keeping the water in, with that photo, I’m not sure how you fill it without losing all the water before you can get the lid back on. Ok, I just looked back at the photo. It appears to only have one bottom hole? So you plug that somehow during refilling. I have a purchased waterer along the same lines. But I don’t heat that one.