Non-Humanoid TFs...

While looking at one of the other threads on this board, I was suddenly struck with a question:
Why do some of the Transformers have a non-humanoid "robot" mode?
Most of the incarnations of Cybertron I've read or seen seem to be lacking in inorganic flora and fauna, outside of the Transformers themselves--a good majority of which are in a humanoid form. So was it a freak chance of design that lead to certain TFs to lack a humanoid form, similar to the mutations in organic lifeforms as suggested by evolutionary biology? Or were the likes of Laserbeak and Sky Lynx once humanoid in form, but were transferred to new bodies for reasons strategic (or, for someone like Sky Lynx, purely aesthetic)?
Not that there's a particular answer to this question...I'm just curious to see what everyone else thinks.
Why do some of the Transformers have a non-humanoid "robot" mode?
Most of the incarnations of Cybertron I've read or seen seem to be lacking in inorganic flora and fauna, outside of the Transformers themselves--a good majority of which are in a humanoid form. So was it a freak chance of design that lead to certain TFs to lack a humanoid form, similar to the mutations in organic lifeforms as suggested by evolutionary biology? Or were the likes of Laserbeak and Sky Lynx once humanoid in form, but were transferred to new bodies for reasons strategic (or, for someone like Sky Lynx, purely aesthetic)?
Not that there's a particular answer to this question...I'm just curious to see what everyone else thinks.
