Questions I've always pondered

Question - What does it really sound like in the dog world?
Question - Can cats sense everything?
Question - Can cats purring really mend bones?
Question - Even though they deny it, did Coke have coke in it?
Question - Is black the absence of color or all the colors?
Question - Why do cockroaches look like that?
Question - Why do so many people hate cockroach?
Question - How was tofu invented?

Do you have any? Maybe we could help eachother.

More questions and answers later.