I have a 15 year old miniature dachshund who shows no interest in food. She seems to not recognize food. I have been home cooking for 18 months. She even refuses to eat that. All I can hand feed her is an oatmeal cookie and Wendy’s hamburger meat. But this is a struggle. It is like she does not recognize food as food. She shakes her head and spits everything I try. I have tried every kind of food. Nothing interests her. She does howl in her cage now and then but she still knows where she is and has good night sleeps. The loss of food recognition and appetite are really her only symptoms of dementia. She has seen her vet. But any advice would be greatly appreciated!