My dog started limping and shaking , but there is nothing in his paw
My shih tzu is about 7 years old and this morning he started limping, before I left the house it seemed to have gone away. When I came home it seemed worse he won't step on his front left paw, tries to hobble on only his back legs and right front legs.
When I looked at his foot and paw pad there seems to be nothing stuck / anything wrong. Also while touching his leg he didn't yelp, he just pulled it away. Now he is also shaking , and I'm worried about him. Please answer ASAP