May I ask what else would you like them to do with excess horses? What is the main goal in stopping horse slaughter and why? The market is already flooded with horses, where will the old, sick and injured go?
Just because Canadians don't tend to eat them is it wrong for other cultures to? The cow is sacred to many South Asians yet they don't try to stop North Americans eating cows. Jews and Muslims don't eat pork but yet don't protest others eating it. So what's the true motivation?