Hmmm...That reminds me of when I recently looked at the products in a hair salon. I actually saw a pet products made by the same company that made hair products for humans. I can't remember the name, but that was the first time I'd seen something like that.
I was reading a post a while back (3 years, I believe) about a lady, with waist length hair, who claims that she owes her length to a cat conditioner. She said it reduced the breakage and made her hair stronger. I wish I could remember the link--I read so many!