You didn't say if you reported this or not. I sure hope you do. I would hate to see the dog come back, when your children are outside. Even if you have a gun, what's to say you could get a clear shot if the dog was attacking. At least have it on record at the sheriff's department.
Morning,
Wow, your rhodies are blooming already. Nice pictures. It looks to me, like the bridle is too tight on the pony. That could be why she is "smiling". Hard to tell on photos sometimes.