Liberty has had trouble with opening her mouth wide enough to do things that most retrievers enjoy ~ like playing with balls. It's as a result of scar tissue in her temporomandibular joints (tmj). Today, she managed to actually get a tennis ball in her mouth, and although you wouldn't know by the picture, she carried it around most of the afternoon! It was a tight fit, and she looked a little relieved when she finally put it down.
Libby won't ever have normal jaw function, but at least for a little while, she got to have "golden fun!"