Jane Dodds is calling for greyhound racing to be banned in Wales.
The Mid and West Wales MS said at the Senedd that she has consistently campaigned for that to happen.
She said many MSs would know that she had raised the issue of her own greyhound, Arthur.
Ms Dodds said: “Sadly, we said goodbye to Arthur yesterday. He was only 11, and he'd only been with us for three years.
“For the eight years before he'd been either in a dogs' home, or five years on a racetrack, which is where the dogs' home found him in absolutely squalid, terrible conditions.
“Arthur was a very anxious dog. His back legs went, and he had a serious neck injury from racing.
“I don't want any more Arthurs. I don't want any more dogs that come out like Arthur. We have to ban greyhound racing.”
Government Business Minister, Lesley Griffiths, said this is something that she has been looking at very closely.
She told Ms Dodds: “We've had a Petitions Committee report into banning greyhound racing, and my officials have been looking at what can be done in relation to that.
“We need to build up evidence if that is the way that we think it should go.
“We cannot do anything without evidence, and I very much look forward to continuing this debate.”