Puppy
noun
A child dog is a puppy!
Even though this is a jukugo word, it doesn't use the on'yomi readings. Fortunately you learned the kun'yomi readings with the vocab words 子 (こ) and 犬 (いぬ). Just think of 子犬 as those two words mashed together to remember this one.
子犬は、かわいい。
The puppy is cute.
子犬はトレーニングがたいへんです。
Puppies are a lot of work to train.
子犬ごっこをしましょうよ。
Let’s pretend we’re puppies!