An alpaca had to be euthanased while a sheep and goat were mauled during two distressing attacks by dogs in Bulli at the weekend.Hobby farm owner Lisa Woodhouse said she was alerted by neighbours shortly after 8.30am on Saturday that two dogs, one described as dingo in appearance, the other a Staffordshire cross, were attacking her animals."A neighbour had to use a golf club to try and beat the dogs off my alpaca," she said."He finally got them off and then they went for the sheep."Then another neighbour heard the commotion and tried to help."Ms Woodhouse said by the time she reached the scene, the animals were severely mauled.A vet was called to the property and a decision was made to euthanase the alpaca."He was really stressed and had terrible facial injuries; the nasal cavity was pushed in."The sheep, which was attacked about the neck and tail, is in a precarious state.No sooner had police arrived than they were called to a neighbouring property in George Ave where two dogs had reportedly attacked a goat.Pet owner Marina Scozza said the dogs, both described as dingo in appearance, had jumped her fence about 7.30am."I saw the dogs and they were just crazy, a really serious concern," she said.The mother of three young children chased off the dogs before the goat was killed, but like Ms Woodhouse, she holds concerns they will return."Just watching their behaviour, I'd hate to think what they'd do if they got hold of a small child," Mrs Scozza said.Police said the two dogs were yet to be located.