I had two pygmy goats who shared the run with my chickens for years. The only problem I ever had was trying to keep the goats out of the chicken feed. 
And yes, goats can really do serious damage to your trees if they can get to them. Mine ate my two young pear trees
But they were adorable, so they got away with it

And yes, goats can really do serious damage to your trees if they can get to them. Mine ate my two young pear trees

But they were adorable, so they got away with it
