These thematic pictures of Zvířata are analogous to a visual dictionary. The theme "Zvířata" is split into several parts. For children, especially toddlers from 1 to 5 years old, it is better to divide the sets of cards over several days, or even weeks, so that the information is absorbed better. This is especially true if you are using flashcards to learn czech language that is not your native language.
To expand your czech language vocabulary on the "Zvířata" topic, flashcards games are the best way: