PetSafeMartingale Dog Collar with Quick-Snap Buckle - Small, 3/4 Inch, Deep Purple

Q: what size would I need for a dog with a 12-13" neck?

What size would I need for a 12 to 13 inch neck for an 8-9 pound dog?

Q: I was wondering what diameter neck it fits. I don't see the neck measurements anywhere.

Check PetSafe's website for specific instructions on how to measure collar:Sizing ChartCollar Size Collar Width Fits Neck Sizes Petite 3/8 inch 5-8 inches Small 3/4 inch 8-12 inches Medium 3/4 inch 10-16 inches Medium 1 inch 10-16 inches Large 1 inch 14-20 inches My sense is that they ran a little large. Cheers, Christopher

Q: Does the snap hold up to a strong puller? Mine is a pretty strong 80lb dog

To address the dog trainers response. I have a 65 lb rescue mix (looks most like a German Pinscher) that only a classic metal choke collar would work. She took on a gentle leader, her neck was strong enough that her neck would not pull towards me, If I stopped she just pulled and pulled, it was amazing. I guess real metal choke collars are considered inhumane by some ((?), but my dog is one tough dog and the choke collar worked,. I am looking into this type of no pull simply because getting the choke on and off is difficult. We only put it on when we walk her, so now she hears it and comes running , stays perfectly still when we put it on.

Q: How many inches is a large?

Happy New Year, Jordan. Per the manufacturer's comment, the Large Martingale Collar is 1 inch wide and is an adjustable 13 - 20 inches. Also, they have a great listing with a second image that shows the size chart in detail.