Can you add mermaid in next update
Yes, a Mermaid is part of the next update.
Can i ask is mermaid be like lamia with two stomach or not
Yes, two stomachs.
will there ever be a very difficult predator that will have 4 stomachs or more
Maybe? I guess it depends on your definition of 'very difficult', but I have some ideas for 4+ stomachs.
A cow pred