Mud driving me batty!!!!? i have a substantial garden with grass but the side of it...

i have a substantial garden with grass but the side of it is a mud route due to the dog running up and down it. when he comes in theres mud everywhere. any design or advice how to concord with this..suggestions to seize rid of mud/fencing ...anything please
Answers:    what you could do my friend is when it's dryer get a skip and remove the muddy nouns 3inches deep and replace next to gravel or course sand it will also help keep hold of the dogs nails the right length
Our dog did equal coz he liked chasing subsequent doors kids up and down the garden so we ended up doing a border next to gravel.