Hi everyone

I was wondering if you very lovely people would be able to help me out by answering me a question or two:

Do you buy dog collars based on the type of 'work' your dog does? I.e., if you have a rottweiler who you use (primarily as a pet but) as a guard dog, what type of collar would you buy for it? And why?

Or, would you buy a collar based on your dog's breed?

Or, if neither of the above, do you buy collars based on what you like or what you think suits your dog?

And lastly, how often do you buy collars for your dog/s?

Thanks very much