When living in a flat with a cat, you have to get creative. Toys keep them entertained, and frequent trips onto the balcony give them a sense of freedom out in the world. But now, experts are warning cat owners in flats to be careful when opening the door to the outside world.
Fuelled by hot weather and a desire to get outside, a number of urban cats are suffering from “high-rise syndrome”. This is where cats go out for a walk on balconies or rooftops, taking a fall from a dangerous height.
“It is true that cats can twist in midair, but it is not always the case that they will land safely. Depending on the height it falls from, a cat could suffer severe injuries such as broken limbs, jaw fractures and internal trauma including brain damage,” Izzy Hocking, Cats Protection Senior Veterinary Engagement Manager, said:
“In some cases, falls can prove fatal or result in euthanasia due to the severity of injuries. You might think that cats naturally understand the dangers of heights, but this is not always true. Cats living in flats, particularly those who have never experienced the outdoors, do not recognise the risks posed by open windows, doors or balconies.”
According to the charity Cats Protection, the number of indoor-only cats is rising, particularly in central urban areas where 46% of cat owners keep their pets inside. For these owners, it is important to be aware of their cats when they are out on balconies.
Younger, more curious cats and unneutered males may be particularly at risk, as they are more likely to roam outside.
Blue Cross animal hospitals in London and Grimsby have now treated 33 cats this year that have fallen from a height. In 2025, the charity admitted at least one cat a week.
“Injuries sustained when a cat falls from a height can be extremely serious and often life threatening. Even from a relatively low storey, cats may break several bones or land somewhere dangerous like a spiked railing or onto dangerous objects below,” said Roisin Bolger, Veterinary Standards Lead at Blue Cross.”
“Injuries will often need extensive surgery and a lengthy stay in hospital. Cat owners really must take measures to prevent their pet from falling from a window or balcony to prevent suffering or death.”
To keep your cats safe, especially on hot days, experts suggest fitting secure netting or screens over windows, doors and balconies and avoiding leaving windows open unattended.
Ensuring cats are neutered can reduce their desire to roam. Having interesting indoor spaces for them to explore can help too.
