It is pretty easy to make, but requires some skills for the finishing like almost all the knitted toys.
The pattern is mainly a chart of the two part of the body that is why the file is pretty heavy.
A pattern of a stegosaurus.
Stegosaurus were herbivore and ? And nothing relating to knitting. This one is small and only needs a few yarn, about a ball of 50 gm and some remnants (or scraps).