Poor Sid has managed - somehow - to hurt his single rear leg. He is a big dog, a greyhound weighing 32kg, and he is very well muscled, but it hasn't prevented him from doing something ...

He was fine over Christmas Day.  Delighted and happy to have four extra people in the house, lapping up all the extra attention.  The only thing that happened was that he got his back end under my husband's recliner while it was in the 'up' position and unfortunately, his head under mine so I couldn't get up either.  When my husband tried to gently lower the footrest (knowing that he was under it) the frame hit his back leg just below the hip. It wasn't hard, but it made him jump and raise his head - releasing me in the process.  I got down and gently dragged him out from under the chair, which is something we're all very used to doing, but he yelped a bit this time.

Next morning he seemed normal.  He went for a walk as usual and though he was a bit stiff, it was nothing out of the ordinary - he is nearly nine years old and has been an amputee since he was three and a half, and is often a little stiff.  The difference, I suppose, is that due to a skin problem, he hasn't been swimming for months, and so is a lot less supple than usual.

Last night, he was sleeping by the bed.  I was woken by a wild scrabbling to find that he'd got himself in an awkward position with one leg under the bed and one front foot on the laminate instead of the rugs so he couldn't right himself.  I got up and moved him. Again, something I'm well used to doing.  He hopped out of the room to sleep in the lounge, and I could see he wasn't at all right, so I gave him two 50mg Tramadol.  He was extremely reluctant to open his mouth to take them, which is most unusual.  He is usually extremely cooperative.

This morning I got up to find he had vomited where he had been lying, and also pooped near the door.  He was lying on the floor and did not get up when I appeared.  Did not get up for breakfast, did not go out for a pee. 

I took him to the vet this afternoon, who examined him, and tried to get him to pee in the yard.  Sid refused to pee, and also collapsed onto his back end, shaking, twice on the journey back to the consulting room.  The vet is a greyhound specialist and does track work here, and he gave Sid an intravenous shot of Carprodyl, and some tablets to see him over the weekend with instructions to come back on Monday if he wasn't better.

I am extremely worried about him.  He has drunk till he vomited (now I'm rationing the water) and I put a collar and lead on him and made him go out to the garden where he peed a lake.  He walked out fairly okay, started back fairly okay, then suddenly froze.  I encouraged him back, but after negotiating the back step, he collapsed again and I had to manoevre him onto a large bath towel so my husband and I could carry him into the house to a dog bed, where he remains, hours later.  His feet are cold, and his temperature registered below normal at the vet's, though he wasn't too concerned about it.

Sorry to be so long-winded, but I wanted you to have the full picture.  Any ideas?  Could he just be bruised from the recliner incident?  Is it the Carprodyl making him so thirsty?