Has anyone modeled a cartoon big cat in Zbrush before?
Zbrush Cartoon Big Cat
Falam
#2
If I can model a big cartoon cat in Mudbox, I’m sure it can be done in Zbrush, they are almost one in the same in terms of what their purpose is ! 
Psyk0
#4
It makes no difference if it’s a realistic turtle or a cartoony lizard. Sculpting is sculpting and it relys on artistic skills that you need to train. You could use google to find a tutorial that is close to what you need (creating a cat / quadruped) that should be more helpful than us.