The Blue Cross animal welfare charity has issued an urgent warning to guinea pig owners across the UK as the ongoing heatwave pushes temperatures above 26 degrees Celsius, a threshold that can prove fatal for the animals because they cannot regulate body heat through sweating.
Why Guinea Pigs Are at Risk
Guinea pigs are unable to sweat, making them highly susceptible to overheating. The Blue Cross stated: "Important: Temperatures above 26 degrees Celsius can cause fatal heatstroke, so it's best to bring your guinea pigs inside before it becomes too hot. Guinea pigs can overheat very quickly, as they are unable to regulate their body temperature by sweating." With the UK experiencing record-shattering temperatures—preliminary data show the mercury hit 36.1°C in Gosport, Hampshire, surpassing the previous June record from 1976—owners who keep their pets outdoors must relocate them indoors immediately.
Immediate Actions for Owners
There are more than 900,000 guinea pigs across the UK. The charity advises moving outdoor guinea pigs into a cool room inside the house, as sheds, conservatories, and garages can also become extremely hot. Keeping curtains and blinds closed helps block out the sun. Frozen water bottles or ice packs wrapped in a clean towel or sock can be placed in the enclosure for guinea pigs to lie next to, providing a cooling effect without risk of ice burns.
Hydration and Diet Tips
Ensuring adequate hydration is critical. The Blue Cross recommends providing plenty of fresh, cool water throughout the day, placing water bottles or bowls in different areas to encourage drinking, and checking that water spouts are not blocked. Hydrating vegetables like cucumber can be fed in moderation, while watermelon is hydrating but high in sugar, so it should only be given as a treat. Soaking leafy greens in cold water or serving them fresh from the fridge can also help.
Cooling Enclosures Effectively
Marble tiles or slates placed in the fridge before being put in the guinea pig's home offer a cool surface for the animals to lie on. These should remain in the shade, as they can become hot in direct sunlight. Plastic hidey houses or shelters should be avoided because they heat up quickly; instead, owners can provide man-made burrows using big piles of hay for guinea pigs to burrow into and escape the sun.
Ongoing Heatwave Warnings
The Met Office has declared an uncommon red alert for extreme heat as Britain continues to bake in extraordinarily hot and humid weather. The Blue Cross urges all guinea pig owners to act now, as temperatures are expected to remain well above the 26°C danger threshold.
