Canada has less heat of the moment gun homicides because the government here makes it difficult to get weapons easily and if you do get a license. It's mandatory to lock up the weapon, and you must also lock the trigger with a special lock. Then you must store the ammo and lock it, toy must also not store it in the same room. They got tons of rules about how you store your weapons inside your house.

So heat of the moment homicides don't happen because the weapons are normally are all locked up and most people don't have weapons.

The majority of fights between couples, family etc is physical fights, and objects, knives.