Nov. 9—Q: I have a Cavalier King Charles Spaniel who is 9. Recently, over the last two weeks, he developed an involuntary, what I would call, muscle spasm. I can see it in his upper body and through ...

Neck muscles have an essential role in supporting and stabilizing your neck. More than 20 muscles are working to keep your head supported and moving. Your neck muscles have a range of responsibilities ...