Leaving animals in hot cars is extremely dangerous and can quickly lead to heatstroke, which can be fatal. Never leave animals in a parked car during hot weather.
Over-exercising animals during hot weather can lead to heat exhaustion and dehydration.
Don't leave animals outside without access to shade and water, as it can be dangerous, especially during hot weather.
If you notice signs of heat exhaustion in an animal, don't ignore them. Move the animal to a cooler area and provide water. If their condition doesn't improve, seek veterinary care immediately.
Provide feed that can heat up quickly, as it can cause fermentation and lead to further heat generation in the stomach.