
Honestly? No idea. I've only lost one dog, and it was less than 24 hours from her being apparently healthy to being PTS (she had osteosarcoma, we didn't know until it broke her leg). Broke my heart, and I wasn't there to see her go - that makes it infinitely harder I find, much harder to cope as personally I need that closure. Same thing happened to one of my cats, and as with Opi (the dog) I spent a couple of months half expecting to see them come round the corner.
So personally I find it much easier to cope if I'm with them when they go - but it's still very hard :( In November I lost my last cat, with her I had 2 weeks from first symptom to PTS and I held her as she went; hardest thing I've ever had to do, but I owed it to her to be there. Still miss her terribly, as I do my other oldie cat who was PTS a month before.
My Dad actually worries about this - he's concerned about how I'll cope when the dogs I have now pass on, and I have said to him that in all honesty, I'll be devastated - Remy especially, he is my soul dog :) I think he's like the people you know - he doesn't see dogs quite as much as family members as I do, and he's asked why I'd get them knowing what I'll have to go through when they die; he certainly can't understand why even though I know there'll be so much pain on my part, I'vew got 3 dogs and another on the way (he doesn't know about that one though!). I can't explain it to him, but I could never be without them. I've done the hysterical thing too, so I know how you felt - always with Remy, he's far more sensitive a dog than I've thought him to be and I'm only just realising it; quite a few times I've had dreadful nights where I've thought he wouldn't make it, he'd get torsion etc. A few months back I had a horrible week where I was worried he had osteosarcoma - false alarm, but it was dreadful. I was worried all the time he was being neuetered, and having the x-ray for that leg; and all the time Opi was being neutered, more so as hers was slightly more complicated than normal spays. Right now I'm worried for Soli, as I found a new lump on her thigh the other day that's not moving like her two fatty lumps. But we get on with it, don't we? When it comes down to it, everyone here knows their dogs are more than worth the bad days and sleepless nights.
My, that got a bit long! Sorry :)