To breed frogs either breed your own frogs in your habitat by tapping one of you frogs then tapping the heart symbol and choosing another frog in that habitat (remember that all frogs must be adult and tamed to breed). Or you can breed by jumping on another frog that you meet in the pond ( both ways cost coins the amount depends on which level the frogs are).

Search Pocket frogs in the youtube link below for a tutorial!

Combinations for glass frog!

Olive Albeo Anura + Red Tingo Anura = Glass Tingo Anura
Olvie Tingo Anura + Red Albeo Anura = Glass Albeo Anura