The Canny Collar was voted ‘Best New Product’ by the UK pet industry when it was first launched in 2006 and little has changed since. It was the first dog head collar to be introduced into the UK market that controlled the dog from behind the head and has since inspired several copycat products using the same idea but without the same effectiveness, quality of workmanship or loyal following. 
MEASURE YOUR DOG’S NECK
To ensure your Canny Collar fits accurately and is safe to use when walking your dog, take a tape and measure around your dog's neck snugly, to just behind the ears. (see image)
If your dog's neck measurement falls exactly between two sizes, our experience shows that the best option is normally to choose the smaller of the two sizes to ensure a good fit.
If your dog's neck measurement falls exactly between two sizes, our experience shows that the best option is normally to choose the smaller of the two sizes to ensure a good fit.
23cm - 28cm (9" - 11")
1
28cm - 33cm (11" - 13")
2
33cm - 38cm (13" - 15")
3
38cm - 43cm (15" - 17")
4
43cm - 48cm (17" - 19")
5
48cm - 53cm (19" - 21")
6
53cm - 58cm (21" - 23")
7
58cm - 69cm (23" - 27")
Colossus