I just realized this comic end up as a shaggy dog story. :o
I'd think a gym with tubes in it would benefit a ferret more than a human-styled tricep sprainer, but then, someone who catered to multiple species would want a more generic set of exercise machines. Plus, you don't have to figure out how an exercise machine for multiple non-humans would work. :p
I just realized this comic end up as a shaggy dog story. :o I'd think a gym with tubes in it would