Bucky reaches up without thinking, brushing his fingers against the soft fluff of Bruce's tribble. The hesitance he would show towards touching a fellow person is non-existent when it comes to touching the animal and he looks a little more relaxed as he pets it. "It's very loud."

The petting only spurs the purring on.

His hand drops to pay attention to his newest cooking lesson and take the sifter from Bruce, turning it over in his hands. "I liked to have banana pieces with them before." he nods and moves forwards to give it a go, frowning. "But they don't taste right anymore."