These thematic pictures of حیوانات are analogous to a visual dictionary. The theme "حیوانات" 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 persian language that is not your native language.
To expand your persian language vocabulary on the "حیوانات" topic, flashcards games are the best way: