As the UK braces for a heatwave, pet parents are urged to be vigilant against heatstroke, a silent killer for dogs. Animal welfare experts warn that even short midday walks can be dangerous, with panting alone insufficient for cooling. Flat-faced breeds, older dogs, and those with thick coats are particularly vulnerable. Recognizing signs like excessive panting and red gums is crucial; immediate veterinary attention is vital if overheating occurs.