We had an interesting discussion about features of mammals yesterday and most of the students were amazed that seals and whales suckle their babies. I went online and found some sites with pictures. You may need to scroll down to find the pictures.
Orca
Beluga
Sea lion
Harp seal
Yes, a platypus is a mammal. It is one of two egg laying mammals, the other is the echidna (ant eater).
Platypus facts
I didn't know this
"Mother platypuses don't have nipples like most mammals. They suckle their hatchlings by secreting milk onto their fur from two milk patches on their stomach."
Here is a picture of two tiny platypus babies with their mother.
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