Answer:
He is primarily described using animal imagery. This ranges from having paws as a bear, drinking water like a horse and bleeting like a sheep. He is also described like a child very often.
he is described as very child-like, as he likes to pet soft things and doesn't really know what is going on around him.
Lennie is a big man with a mental disability. He does not know his own strength. He is child-like, innocent, and likes to pet soft things.