(10)In order to make a clear distinction between the rules that apply to non-commercial movement and to trade in and imports into the Union from third countries of dogs, cats and ferrets covered by the animal health requirements of Directive 92/65/EEC, this Regulation should not only define a pet animal, but also the non-commercial movement of a pet animal, during which such a pet animal accompanies its owner or an authorised person. Experience has shown that it is not always possible for the pet animal to be in the immediate vicinity of the owner or authorised person at all times during non-commercial movement. On duly justified and documented grounds, the pet animal should be considered as accompanying its owner or the authorised person even if the non-commercial movement of the pet animal takes place up to five days earlier or later than the movement of the owner or of the authorised person, or takes place in a different physical location than that occupied by the owner or by the authorised person.