Many dog owners know the scenario: As soon as the treat bag rustles, the dog is immediately ready–and a “no” seems pointless. Breeds like Labradors or Beagles are considered real “vacuum cleaners” ... PETBOOK magazine on MSN: These dog breeds are especially gluttonous, and there’s a reason Recently one of my friends told me that there is distinct difference between 'know of something' and 'know about something' expressions.

Context Explanation

'know of' is used when you have personal experience with wha... "Know about" vs. "know of" - English Language & Usage Stack Exchange Possible duplicate of "Know about" vs. "know of".

Insight Material

Also What are the differences between “know”, “know about”, and “know of”? on English Language Learners, which is probably a better site for questions like this. to know vs to know about - English Language & Usage Stack Exchange Why do you think that He doesn't know him from his schooldays means that he does know him? It would only have that sense if you added something like In fact, he first met him at university. What is the correct usage of phrase "you don't know what you don't know"?

Final Conclusion

Can it be used in formal conversation/writing?