A police officer was hospitalised during a three-hour operation to round up a herd of escaped cows.
The herd went on the run when the tractor and trailer, which was transporting them, overturned on a busy road.
Around eight escaped and began wreaking havoc in the surrounding area, damaging cars and gardens in Bradley Stoke.
Police tried to round up the beasts but an officer was hurt when one ran into him. He was taken to a nearby hospital but was released after being assessed by doctors.
The incident happened on Friday afternoon after a tractor and trailer overturned near the M4 in Bristol at 12.15pm.
The animals ran from the scene, trampling gardens and damaging a number of cars before being caught half a mile away at 3pm.
During the incident one of the animals was shotat the request of the farmer, after it became "distressed".
Many shocked residents returned home to find their gardens and cars trashed, including Keith Brett, 59, who was shocked when his CCTV footage showed the cow invasion.
The IT consultant had been out for a walk when the cattle arrived outside their home, trampling over their garden and leaving cowpats behind.
He said: "I couldn't believe it. They came right up to our door. Luckily they didn't panic, or they could have done a lot more damage."
His wife, Leena, added: "It's just unbelievable. We came back from our walk to a total commotion.
"The cows and bulls had walked all the way through our close. There was cow mess everywhere and they had trampled on two cars."
A number of cars were damaged by the rogue animals, including a Vauxhall Corsa, which was left with a dented bonnet after one of the animals ran over it.
The car's owner, Jane Williams, 46, said: "As I went to turn right at the bottom of the road the cows crossed my path.
"I parked on the road and looked up to the top where I could see some people and the police. They were massive animals but they were obviously terrified.
"They came through the side of the drive, smashing up my pots. They bashed into the car and I saw one go up on the car. The damage isn't too bad but it's got to be dealt with."