Fox Mauls 2 Baby Girls in London Home

Nine-month-olds twins Lola and Isabella Koupparis are recovering at the Royal London Hospital after being attacked in their cots at around 10pm on Saturday night by a fox in in Homerton, east London. Issue date: Monday June 7, 2010. A fox discovered in a pest control device, set after the attack, in the family's back garden has been humanely destroyed by a vet. See PA story POLICE Fox. Photo credit should read: Steve Parsons/PA Wire URN:8972886 (Press Association via AP Images)
AP Photo/Steve Parsons
A fox walked into a London home through an open door and attacked twin 9-month-old girls in their cribs, leaving the babies hospitalized with bites on Monday, officials said.

Urban foxes are a common sight in many parts of London, hunting and scavenging at night from dens in parks and empty lots. They are generally timid and not considered dangerous, and attacks on humans are virtually unknown.

Police said the attack on the 9-month-old sisters occurred when the fox entered the east London house Saturday night. London experienced unseasonably warm temperatures over the weekend.

Police described the girls' condition as serious but stable.

Neighbor Michael Parra said Monday that police had warned residents not to keep their doors open. Parra said residents "see a lot of foxes around here. They're always in our garden."

Hackney Council said it had never received a complaint about a fox attacking a human and "all the expert advice is that incidents like this are incredibly rare."

John Bryant, an expert in pest control, told the BBC that foxes tend to avoid people.

"They will walk into houses, walk round, mess on the bathroom floor and sometimes sleep on the bed if people are not around," he said, adding that he could see no reason for an attack "unless it jumped into the (crib) and then found itself with squirming children underneath it and couldn't get out.

"It just doesn't make any sense to me."

The incident may remind Atlanta, Georgia residents of a recent incident in a parking lot, when a security camera captured a local resident trying to fend off a rabid fox that attacked him. Click on the player below to watch the video.

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