A Toronto Zoo building that apes the rainforest

The smart Sumatran doesn’t venture outside if temperatures dip below 10 C. And, on this day, with the humidity making the -1 C feel much colder, the seven Toronto-based Sumatrans aren’t exploring their new, Zeidler Architecture-designed space with the same curiosity as they did in mid-summer.

And, even then, only the oldest female, Puppe, was brave enough to venture outside on a regular basis: “She walked; she climbed her own line; she was exploring our towers; she was using enrichment,” says Olivia Franzin.