Our little elderly dog, Dixee, has been failing today. Mrs. Orr noticed it right away this morning. She was just off, and even though she ate and drank at breakfast, she wasn’t quite herself. Through the day, she has declined noticeably. The most dramatic symptom is a weakness in her rear legs. She walks and moves as if someone gave her a novocaine injection in her hips. They’re splaying out, weak and trembly, and she seems perplexed by this development. She also seems to be retaining some fluid, her belly distended from edema, which causes her to wheeze and gasp as she’s laying on her side, trying to sleep. Understandably,…