Original sentence: The heart of a whippet is large and slow beating, often being arrhythmic or even intermittent when the animal is at rest.This sometimes causes concern to the owner, or to the vet not experienced with the breed
Edited sentence: The heart of a whippet is large and slow beating, often being arrhythmic or even intermittent when the animal is at rest  This sometimes causes concern to the owner, or to the vet not experienced with the breed