Yes, it's normal. c:
Actually, I have to disagree with the other posters on the social thing. Frogs are not herd animals, and every site I've ever read says they are fine alone. However, it's really fun to watch them interact with each other (I have two adults and five babies right now) so if you really want to see some cuteness, it wouldn't hurt to find a friend. :)
I currently feed my frogs with tongs. I trained them to come to the surface when I tap the tank, and they eat bloodworms and sinking frog pellets off the tongs. It's really fun to do, actually, they are so adorable.
Robert Falcon Scott - Red salamander HM plakat
Passed on- Friedrich "Freedy"
Four African Dwarf Frogs - Dorkus, Sporkus, Baron(ess), and Bubbles!