You can say that.
There could be subtle differences in meaning when using "as" and when using "like" as comparison prepositions, but I'm not sure about that.
(I previously said you couldn't, but I was wrong, so I edited the comment. Thanks, Leibel94!)
does it work like that for only a certain category of nouns ? is there a systematic rule ? because in the sentence before we saw that כמו was used with סוס