It is sometimes necessary for a person to leave their animal in their vehicle for a short period of time. In warm weather, the vehicle must remain out of direct sun, the windows must be sufficiently lowered to allow for adequate cross ventilation, and plenty of drinking water must be provided in a weighted bowl that cannot be knocked over. The animal must never be left in circumstances where they display symptoms of shade-seeking behaviour and anyone, or a combination of, the following: hyperventilation; excessive panting; excessive drooling; lethargy, weakness, or collapse; lack of mental or physical alertness; incoordination; shivering; shallow, slow breathing; or muscle stiffness.

In cold weather, the vehicle should have ample bedding to allow the animal to maintain thermal comfort. The animal never be left in circumstances where they display behaviours indicative of thermal distress.

It is an offence under the Animal Welfare (Care and Procedures) Regulations 2018 to leave a dog in a stationary vehicle where the dog is displaying signs of shade-seeking behaviour, as well as excessive panting, excessive drooling or hyperventilation.