Beavers bring their pet (if they have one) and tell the rest of the colony all about it. Alternatively, invite a local animal keeper or farm/zoo owner to bring in a selection of animals and discuss different animals and their care, differences and similarities etc.
Beavers with pets (and their parent if they bring it along)/ selection of animals
Beavers who have a pet bring it (with their parent if it needs to be controlled). They take turns to tell the rest of the colony about their pet, its name, type of animal, what it eats, how they look after it and anything else they want to say in their allotted minute or so.