Aggressive to her dog friends mixed golden retriever 2 1/2 yrs. Old
(Fort Mill s.c.)
Have had herfor alittle over a year. She had her litter about 6 months ago,gave one of her puppies to my friend on the lot beside us,and they have 4 other dogs.they are not aggressive, but she keeps attacking even after they are coward down.these are her friends. Why all the sudden is she like this.what can I do?