The Doctor taps the tank again with his hand and he ohs. "I remember that planet. I rather like this guy myself. Why don't we go see the monkey house?" The Doctor asks Master and these guys resemble a lot of other races he's dealt with in the past.

"The Sullurian reptile house," The Doctor tells them, and he wanders out the door towards the monkey house. "Come on now, I don't need you to get the nibbles for some zoo staff."