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