Jungle is a compound sign. First, sign wet, then sign forest. The wet sign is made by reaching up with your hands, bringing your fingers and thumbs together while pulling both hands down, palms facing you. As for forest, make the tree sign, then glide your dominant 'tree' arm as it sways with the wind and sits atop your non-dominant 'ground' arm from one side of your body to the other.
Teach your toddler the jungle sign when they are enjoying "The Jungle Book" series, or when you are visiting a zoo.
This is a useful flash card taught best in conjunction with the other flora and fauna flash cards.