Fall off and Go to the dogs

Fall off verb - To turn away from a straight line or course.

Go to the dogs and fall off are semantically related In some cases you can use "Go to the dogs" instead a verb "Fall off".

Go to the dogs verb - Become ruined.

Fall off and go to the dogs are semantically related in lessen topic. Sometimes you can use "Fall off" instead a verb phrase "Go to the dogs", if it concerns topics such as decay.