Redhawk Caldera Every songbird says

Phox blinked, bewildered by the sudden muzzle in his mouth, but he didn't immediately pull away. Instead, he let his sister sit there for as long as she liked. Which, honestly, wasn't very long. He was busy watching Elwood at that point, but the movement of his sister's tail caused his attention to quickly divert to that. Instinct took over, and Phox began to move toward the wiggling worm of a tail.

Although his balance was quite horrendous, he attempted to swat at Teehee's tail, even going so far as rolling right over onto his side. He didn't complain at this, though, and instead persevered in an attempt to "hunt" the tail.