Five pregnant cows have been attacked by a dog in a field as Thames Valley Police appeal for witnesses.
A group of around four or five youths were seen with a dog in the area known as Long Meadow, a field off of Waller Drive in Newbury on Friday evening.
The group let the dog off the lead, which then went on to attack the pregnant cows, causing facial and neck injuries.
The dog is thought to be a white Staffordshire Bull Terrier or a Boxer.
The group, aged between 15 and 20 years old, then left the scene towards Stoney Lane.
PC Ian Bibbins said, "This was a mindless and vicious attack which we believe lasted about 10 minutes.
"A number of people were in the area at the time and may have witnessed the incident."
Anyone with information is asked to call the Thames Valley Police Enquiry Centre on 101.
A tiny calf weighing just six pounds has been born in north Kent. The baby zebu is the world's smallest type of cow and was bred by Artisan Rare Breeds in Dartford. The calf will only grow to about 4ft in height when fully grown.
Video from Artisan Rare Breeds.