What is referred to by 'a baby doctor'?

What is referred to by 'a baby belch 4'? Based on the clue 'a baby born before the 37th week of pregnancy abo...', what is the answer? Based on the clue 'a baby buggy careens down steps in a famous scene ...', what is the answer? Based on the clue 'a baby catcher is another term for this type of do...', what is the answer? Based on the clue 'a baby frog is called either a tadpole or this', what is the answer? What is referred to by 'a baby goose'? Based on the clue 'a baby may do this when this plaything bounces awa...', what is the answer? Based on the clue 'a baby one may be worn by a young woman as well as...', what is the answer?