Though some dogs might appear distressed to be sniffing poo in the name of science, others revel in it. Down in Australia, Max the English springer spaniel is tracking down koalas by the scent of their scat. By all accounts, he loves his job.

“It’s very hard to be down in the dumps when you have a dog who’s looking so joyous and having such fun doing what he’s asked to do.”

Good boy, Max!