<human>: Give me a shortened version of the text

I have two large mixed breed dogs aged 13 years. Both have arthritis in their hips and can walk but mobility is decreased and they avoid stairs if at all possible. Both are on NSAIDs. Both are having some accidents in the house, although they go to an area away from their beds to do it. 

They are both in decline. Neither is 100% clearly at the point of euthanasia, but they're getting there. The male is in worse shape. He did not tolerate the first NSAID and is on his second, and I think he is developing problems with that as well. He has developed severe anxiety and barks frantically if I leave the room and he can't come with me. During thunderstorms he claws at and chews things. I've tried several things from the vet, from natural remedies and pheromones to tranquilizers. Nothing has helped much. 

I am a single mom and work full time. I hate to let that factor into my decision, but the barking and chewing and clawing are driving me batty. I have so little time with my kids at home during the week, and much of it is spent listening to the dog barking or clawing at things, which raises my stress level. The dogs also don't get enough attention. I do have a dog walker come midday. 

The female dog's problems are more straightforward - hip arthritis. She just keeps getting stiffer, weaker and slower. 

I'm pretty sure it will be time for at least one of them soon. And I am considering whether to put them both down at the same time. They have lived together since they were puppies and I think it would be stressful for either of them to live without the other. And I am pretty sure that both of them will be gone in the relatively near future. 

Should I put them both down at the same time? How do I decide when?
<bot>: I have two old dogs, both are having issues, and I am trying to decide whether to put both down at the same time.