A similar image has been posted before on openclipart.org (Renaissance Rhino by sclopit), but I wanted to share a much more detailed tracing from Albrecht Durer's magnificent woodcut, because I think it's worthy. A lot of artistic license has been employed, because the image is far from correct anatomically. But it defined the popular view of a rhinoceros for a couple of hundred years. It took quite a bit of time to touch this up and beautify the initial tracing, but it was worth it.
Rhinoceros 2 free icon was designed by Firkin for icons Png and presented to its users.
Firkin
3/8/2018