Pet Toy
This person found two rubbery things with a flat bottom and ridges along the cylindrical portion of the whatever-this-is. We know what you’re thinking, and we’re disgusted with you! This isn’t that kind of object, though it certainly looks like it could be.
According to online strangers who know a little bit too much about random objects, this is actually a completely innocent pet chew toy. Or rather, it’s a tool that helps get rid of food remnants from your dog’s teeth. As the dog chews on the thing, the soft rubber bristles supposedly wipe away residue from your pet’s chompers.