It’s Caturday at ALB! Of course, without naughty cats there would be no cat videos, no LOL cats, and I am pretty sure the entire Internet would collapse. (Of course, there is now research for this theory!) I am also bossed around on a daily basis by a couple of cats and I am convinced that they are just a set of opposable thumbs away from world domination. I don’t think they can be trained. They train you.
For 1982, this was a fine choice for a pet care collection. As with other technical or medical information, we should treat this information as suspect after 5-10 years. On the idea that cats can be trained? That will be a continuing discussion.