If you take the dog to a lake, make sure it is allowed time to drink plenty of water and get wet. Gaughan says that most dogs can drink lake water without adverse effects. If the dog has a light coat or exposed skin, be careful of sunburn. According to Gaughan, dogs can acclimate to warm climate and have no trouble staying outdoors in the heat. However, dogs that are used to cool climate or air conditioning should not be placed outside on warm days.
Gradual acclimation is the key.