Applicance of Science: Only mammals make milk, right?

Dr Naomi Lavelle looks at what creatures actually produce milk for their offspring

Appliance of Science: Cows do it, we do it, bats and dolphins do it too; we all produce milk to nourish our newborn; it’s what makes us mammals. It turns out that milk-making might not actually be completely unique to us mammals.

Cows do it, we do it, bats and dolphins do it too; we all produce milk to nourish our newborn; it’s what makes us mammals. And mammals are the only animals that do this, right? It turns out that milk-making might not actually be completely unique to us mammals.

Milk making birds