hundido

The -id- flood arrives. Hundo at rank 442 plus -id-, the offspring suffix, gives you a dog's young: a puppy. English needs a separate unrelated word for that, and another for a cat's young, and another for a sheep's, and another for a cow's, and every one of them has to be learned one at a time. Esperanto needs a suffix. Learn -id- once and you have the whole shelf.

Name the family, because it is about to get large. This course has already given you kokido, a chick, and reĝido, a king's child and therefore a prince. Ŝafido, a lamb, sits fifteen places up this same list at rank 2,613; bovido, a calf, arrives at 2,681, and anasido, a duckling, at 2,913. Off the frequency list entirely but perfectly ordinary: katido a kitten, ĉevalido a foal, porkido a piglet, birdido a nestling, and drakido for any fantasy novel that wants one. The suffix asks nothing of you but the root.

Two warnings. -Id- is not a diminutive. A hundido is a young dog, not a small dog: for that you want hundeto, with the -et- of affixes of size. And hundido is not dog meat - the -aĵ- suffix does that job, as bovaĵo does beef, which is the point kokido made about ordering chicken in a restaurant.