Simon has seen a lot of bikes. We pass bikers while riding on trails on occasion, and it has never phased him. But seeing my husband riding a bike was very interesting to him. Rich let Simon smell the bike and Simon lipped the seat and mouthed the rear tire. Then rich rolled it away, climbed on and took it for a circle. Simon snorted and watched very attentively.
That was really the extent of the experience, but this photo of him on the right watching Rich ride the bike is so cute, I had to post it.