Wonder what the bear will do? (9)

I believe the answer is:

speculate

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'wonder' is the definition.
The answer and definition can be both related to thinking as well as being verbs in their base form.
Maybe you can see a link between them that I can't see?

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for speculate that I've seen before include "Bet; theorise" , "Form opinion without definite knowledge" , "Theorise without firm evidence" , "Consider" , "As before, observe" .)

I've seen this clue in the Evening Standard.

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