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Justin Bieber and Selena Gomez are on a roll!

After X17 photographers spotted the couple on a dinner date Friday night, NOW, we've been tipped off to their trip to the L.A. Zoo Sunday afternoon! Soooo cute!

The Biebster even brought along his grandparents as the group was whisked around in a private golf cart for a VIP tour.

Apparently they visited the peacock habitat, because Justin Instagram'd this:



Guess he's not tired of Selena looking at him!