No, unless the dog chews on it or swallow pieces of it.
Not all flea collars are not suitable for pregnant or nursing dogs. Ask your veterinarian about the specific brand of flea collar you're considering.
No
Yes or no
No, it's not wise to bathe a pregnant dog in flea dip
The collar that vicars wear is a clerical collar, not a dog collar. Dog collar is just a crude nickname. The clerical collar is also sometimes referred to as a Roman collar.
Dog fleas are a different species than cat fleas, and flea collars are designed for the specific flea type. A dog collar on a cat would probably be less effective, or may not work at all.
A "dog collar".
I would not use powder. Any flea shampoo is fine, also you could use a flea collar.
no
Frontline by itself should be sufficient to deal with your cat or dog's flea problem. Using a flea bath will reduce the effectiveness of the Frontline (you should only wash your dog with a gentle shampoo to maintain Frontline's protection).
Are you a dog? but just letting you know, the answer's NO. if you are a dog, it's okay to wear a collar, but if you are a human (which I hope you are) then I wouldn't suggest it (unless you are talking about a shirt with a collar).
no
A vicar's neck wear is the wrap-around collar (often colloquially referred to as a "dog collar").