Hello, I haven't seen you for long time.
The left picture is called Pipa pipa.
Japanese name is Komori Gaeru.
According to the Japanese name, This frog care eggs in the back until it's born.
The skin of a female back thickens it like a sponge before the laying eggs .So, this frog is very flat.
A odd figure but, it have love to children.
The human should follow it ,too.