Behavioral Changes
As dogs age, they can experience cognitive decline just like humans. Old dogs might be restless and pacing a lot and become confused.
Sometimes this confusion results in them laying down and sleeping in unsanitary places, such as even their own feces. If your aging pup seems to suffer from doggy dementia, make sure that he has plenty of soft and clean resting places.
Supervise him when he goes potty and clean up any poop right away, so that he does not accidentally lie down in it.
Old dogs also often are unable to jump up on the couch or bed anymore. Invest in a ramp for your senior pup so he can walk up and sleep comfortably again!