My oldest cat, Tammy, is 16. Last November, I took her to the vet because she was lethargic and they said her kidneys were failing. They said this is very common in older cats. They had me come in with her for a week and gave her IV fluids everyday (to the tune of $400). When I took her back in Feb. for her annual shots, they did bloodwork and said her levels were the same as before she had IV fluids in Nov. I chose not to go through the routine again at that point because her weight was back up and she seemed happy and I thought if this is only good for three months, what's the purpose? It was very traumatic for her going to the vet daily in Nov. Yesterday, I noticed she is walking very lightly and seems tired. She loves to go out in our backyard, so we let her out and sat and watched her. She lightly stepped down the steps and sat at the bottom on the concrete slab. She didn't try going too far from that. We just got a kitten a few months ago and I asked my husband whether he thought we were shortening Tammy's life by getting Ming, who chases her and Sheba all around. I don't know whether to take her to the vet again and go through the whole procedure. It almost seems like the person who won't let another person die by keeping them on life support. What's do you think?