Invisible fence...and it's a she. But she doesn't know she has a masculine name! That photo was taken about four months ago. She's really aged since then, unfortunately.
Poor thing can't hear her collar any more, and apparently has learned to tolerate the shock, so she just walks out of the yard on occasion.
She's on a low protein diet...do you have any tips on anything she can eat? I'm giving her 1/4 of her normal portion of Science Diet, and supplementing that with pasta or potatoes. She's really losing muscle mass.
Does she have kidney trouble? If so, the best suggestion I have is to supplement her with Omega 3. Go to Costco and buy the big bottle of Fish Oil from Nature Made. Give her two capsules daily. If she won't eat them, you can puncture the capsule and squirt it on her food. This might also help get her interested in her food if she doesn't have much of an appetite. I'd add more fresh veggies and fruit to her diet, instead of just potatoes. Try baby carrots, green beans, sweet potatoes, apples, but no citrus. All fresh stuff, though, not canned (too much sodium...you really want to avoid sodium and calcium). Also, cranberries would be terrific because of the benefit they provide to the urinary tract and their antioxidant properties. If she doesn't want to eat a large meal, try giving her several smaller meals throughout the day if possible. You also have to make sure she's drinking lots of water. If she's not interested, make it more palatable by adding a little low sodium chicken broth to the water bowl. Put water all around the house so she doesn't have to go far to get it, too.
You might laugh at this, but acupuncture really helps dogs with kidney trouble. I was so skeptical about doing it with my then-14 year old dog, but once we started, she thrived! I got another couple of good years with her from it. It can be pricey, but well worth it in my estimation. You would need to find a holistic veterinarian to do the acupuncture, but your regular vet could help you locate one. (Interesting fact: a holistic vet has to first be certified as a regular veterinarian before they can be certified for holistic medicine, too. Not so with human acupuncturists. They don't have to hold a medical license.)
Last thing, this product
would be very beneficial in helping her maintain the balance of vitamins, minerals and amino acids that her compromised kidneys are throwing out of whack.