Platypuses sweat milk. This is because it doesn’t have teats. Milk appears as sweat on a platypus, but it’s an aquatic mammal so it doesn’t sweat at all.
100 Mind-Blowing Platypus Facts
Platypuses “sweat” milk. Since they don’t have teats, milk appears as sweat on a platypus (it’s not technically sweat, though, since aquatic mammals don’t sweat at all).
The platypus doesn’t have a stomach at all: Their oesophagus goes straight to their intestines.