XL Bully Official Definition updated by DEFRA

The description issued has been updated and is now including a video from the Blue Cross demonstrating how to measure your dog is now included - 

Official definition of an XL Bully dog - GOV.UK (www.gov.uk)

Applying to England and Wales - currently not Scotland and Northern Ireland although this may change in the future.

Height is an important factor: if your dog is smaller than the height specified in the Government’s definition then they are not an American Bully XL, and you don’t need to look at any other aspects in the definition. The height should be measured from the ground to the withers (which means the point of the body immediately behind the neck, at the top of the shoulders), not any higher point on the dog.  
The Government has defined an American XL Bully as: 

• Adult male from 20in (51 cm) at the withers 

• Adult female from 19in (48cm) at the withers 

The ban only applies to XL Bully dogs. There are other established breeds such as those recognised by the UK Kennel Club that may meet some of the characteristics of the XL Bully breed type. These are not within scope of the ban. 

A suspected XL Bully breed type does not need to fit the physical description perfectly. If your dog meets the minimum height measurements and a substantial number of the characteristics in the official definition, it could be considered an XL Bully breed type.

If you think your dog meets the minimum height measurements and has a substantial amount of the physical characteristics set out in the official definition, your dog may be in scope of the ban. This includes if it was not sold as an XL Bully.

Use the official definition of an XL Bully to check if your dog is an XL Bully. You’ll need to check the dog’s physical characteristics such as its size and height. It’s up to the owner or keeper to self-identify whether a dog may be an XL Bully.

Defra recommends taking a precautionary approach. If you’re not sure if your dog is an XL Bully, you should prepare for the ban on XL Bully dogs. This includes puppies that may grow up to be an XL Bully.

The ban only applies to XL Bully dogs. There are other established breeds, such as those recognised by the UK Kennel Club, that may meet some of the characteristics of the XL Bully breed type. These are not within scope of the ban.

A suspected XL Bully breed type does not need to fit the physical description perfectly. If your dog meets the minimum height measurements and a substantial number of the characteristics in the official definition, it could be considered an XL Bully breed type.

If you think your dog meets the minimum height measurements and has a substantial amount of the physical characteristics set out in the official definition, your dog may be in scope of the ban. This includes if it was not sold as an XL Bully.

Enforcement officers should use the PDF version of the official definition of an XL Bully dog. 

Photographs DEFRA: - https://assets.publishing.service.gov.uk/media/655cb2e8544aea000dfb31ca/Official_definition_of_an_XL_Bully_dog__for_enforcement_officers_.pdf