should i leave open canned dog food out?

Unless the dog in question has had dental surgery they should be eating a hard food as the soft food gives them digestive problems as well as dental/gum issues that are irreversible and require surgery later on.....

No, it will go off and stink up your house. I put unused canned food in a ziploc bag in the refrigerator or use the plastic lids that are sold in the grocery store for cans.

No if you want it to stay fresh for tops up to three days tehn put a can lide on it and keep it in the fridge. You do not want your dog to get sick know do you?!

cover then put in the fridge, only last like 3-4 days so use it for your dogs next feeding!!

No, best is to put it into a different container then the fridge. But you can buy plastic lids that fit on tins, just pop one on and put into fridge.

Not at all. Try and take it out of the tin as well if you can and put it in a plastic container

No. Refrigerate the unused portion, just like you would human food.

it wouldn't be a good ideal cause it can spoil (mold) just like humane food.

No, cover and refrigerate! kjl

no not a good idea