We've a fair sized swimming pool which over the years has been used less and less. I personally think the hippopotamus is an interesting animal. I'm sort of wondering if this pool would be big enough for one. -- T. R.

Your pool's probably big enough to hold a hippo, but it wouldn't have facilities to cope adequately with one. Hippos require easy access and egress. Not incidently, there's no pool filter currently made which could cope with the large quantities of loose dropping donated daily by the Nile hippo. Further, this is a large, strong animal requiring one to two percent of its body weight in food daily. They resent short rations. There's no way you can keep a hippo happy at home, and unhappy hippos are very undesirable pets. DEAR DR. MILLER:

Does my canary, Golden Boy, need anything besides canary feed? He turns up his nose, I guess it's actually his beak, at anything else. -- S. K.

Most foods sold as canary seed are not simply canary feed but a mixture containing others, probably primarily millet seed, as well. Golden Boy could get by on straight canary seed alone for awhile but would eventually suffer malnutrition. The combination seed mixes provide a better nutritional balance, and Golden Boy can probably get by without supplementation if the seeds are of good quality. If he is not to be a bachelor bird, if he is to be used for breeding, then simply seedy diets will fall short. Supplements such as a smidgeon of hard-boiled egg yolk and fresh greens would be desirable, though it would probably take assistance on your part to get him to accept these foods. Such supplements would be even more helpful to a hen. DEAR DR. MILLER:

I recently read that sex during late pregnancy may be unsafe for the baby. Since our dog, Molly, is going to be a mother before too long, I naturally am wondering if this sex problem would also apply to her? The article I read was about people, of course. -- D. D.

Since dogs don't indulge in sex during late term pregnancy, problems related to such activity can't occur.