The Kennel Club has explained the reasons why dogs should not be left in cars during warm weather.
It warns to never leave dogs in cars under any circumstances as they could suffer from a heatstroke very quickly, which can be fatal.
Dogs control their body temperature by panting, but this is not enough to stop them overheating, and with inside car temperatures rising quickly in the heat, dehydration, heatstroke and sometimes death can follow.
No amount of time is safe to leave a dog in the car, with it taking just minutes for heatstroke to set in. Leaving your dog with access to water is also not enough to stop any effect of heatstroke in the car.
The Kennel Club had warned of several signs of heatstroke in dogs: heavy panting, even when not exercising; breathing problems, particularly in flat-faced dogs; tiredness, stiffness or an unwillingness to move; dribbling, confusion, being sick, upset stomachs, not able to walk in a straight line, collapsing and fitting.
It also advises what to do if you see a dog trapped in a car.
Even if they seem well, this can deteriorate quickly. If you are concerned for the dog call 999 and ask for the police.
If the dog is not yet distressed, things like asking for a tannoy announcement to find the owners is the best thing to do.
You can also call the RSPCA cruelty line, and if you become concerned or the owners do not respond, you may call 999.
Breaking a car window to save a dog is classed as criminal damage, and documenting your actions, such as photos of the dog in the car, names of witnesses, video of you breaking into the car, remaining on the phone to the police, and documenting your actions after are vital.
Before doing any of this, The Kennel Club advise calling the police and asking for advice before doing anything which could land you in trouble.