These thematic pictures of حیوانات are analogous to a visual dictionary. The theme "حیوانات" splits 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 the information is absorbed better. Especially it is true if you are using flashcards to learn the persian language, which is not your native language.
To expand your persian language vocabulary on the "حیوانات" topic, flashcards games are the best way: