The RSPCA issues guidance for dog owners on recognising heatstroke as warm temperatures approach. The charity highlights that heatstroke can become life-threatening quickly and advises monitoring for both common and less-known signs. In particular, the RSPCA says owners should check a dog’s mouth as part of symptom awareness, noting that changes in the mouth can indicate heat stress. The advice comes amid concerns about the health risks associated with outdoor and indoor exposure when temperatures rise, including for pets that may not show obvious distress at first. The RSPCA’s recommendations focus on recognising early warning signs and taking action promptly if heatstroke is suspected. Sources agree that the key message is prevention through awareness: dog owners should stay alert to symptoms, watch for changes that may include mouth-related signs, and respond quickly to reduce the risk of serious harm.