What size clipper is typically used to remove a mat from behind a dog's ear?

Using a size 60 clipper is appropriate for removing mats from behind a dog's ear because it provides an extremely close cut while minimizing the risk of injuring the dog's skin, which is particularly sensitive in that area. A size 60 blade is very fine, allowing for precision when working in tight spots often found around the ears. This closeness helps in effectively cutting through mats without pulling or tugging on the hair, which can cause discomfort to the dog.

Larger blade sizes, such as 40 or 30, while effective for different grooming tasks, may not provide the same level of safety and precision required for delicate areas. A size 50 blade, while also fine, is still not as close as size 60 and may not completely detangle or remove very tight mats effectively. Thus, a size 60 blade is the best choice in this scenario for both effectiveness and dog comfort.