Arelys Greensboro, NC 4/13/2010 3:24:55 PM Two days ago my beloved pet was put to sleep by our private vet. To my amazement, he used gas prior to inserting the big needle in. My "girl" kicked a bit while taking in the gas. I screamed that she was suffering and the vet said she could not feel anything. I can't sleep, the brutal image keeps playing in my head. I don't think they should use gas. No gas!