if she was a little puppy in may she is maturing perhaps and getting a bit overzealous with being a guard dog and that's why she's barking...or she's just bored.
What kind of dog is it and what kind of exercise and training do you do with them every day.
If the barking is annoying the neighbours I'd keep the dogs inside when I'm gone.
make sure your dog's have all relevant vaccinations for your area, so they don't get sick.
Since they find the bones when you can't supervise them, it is difficult to train it out of them.
I'd think about investing in a fence high enough so that people can't throw stuff in there...there are some crazy people out there that throw poisoned meat in gardens to kill dogs or cats living there...especially when the dog bark a lot.
search the garden thouroughly before letting the dogs out there and make sure wild animals like deers can't get in your garden.
What kind of dog is it and what kind of exercise and training do you do with them every day.
If the barking is annoying the neighbours I'd keep the dogs inside when I'm gone.
make sure your dog's have all relevant vaccinations for your area, so they don't get sick.
Since they find the bones when you can't supervise them, it is difficult to train it out of them.
I'd think about investing in a fence high enough so that people can't throw stuff in there...there are some crazy people out there that throw poisoned meat in gardens to kill dogs or cats living there...especially when the dog bark a lot.
search the garden thouroughly before letting the dogs out there and make sure wild animals like deers can't get in your garden.