Why are you such a hypocrite?
If your argument is 'its the way they treat them' then why don't you just campaign for them to kill them 'humanely' instead of stopping the killing completely? Also its not just dogs and cats that are torture- other animals are too so why don't you say anything about that? Also animals in this country go through a lot of torture too so why are you happy to accept that?
If you try and say its because of intelligence then why are you happy to eat a pig? (An animal which has proven to be a lot more intelligent than a dog).
If someone told you to stop eating cows,chicken, pigs etc because of the torture they go through you'd cry 'vegan nazi' but you quite happy to tell people on the other side of the world to stop eating a certain animal because in your opinion they are 'cute'?
If you argue that dogs weren't meant to be eating then i ask you who gets to decide that? You? what gives you the right to decide which animal can and can't be eaten when you eat animals yourself? someone in india who loves cows could quite easily tell you that cows aren't meant to be eating and they are a great animal.