We have "can-o-bud" here in the midwest. Only they have an easy open pull tops on em, like a can of pringles. The can itself is the size of a snack size can of pringles...... Jus like anything else that's canned, if the can is heated and then sealed it creates a vaccum and no smell should be detected by dogs. I would think it would stay fresh a very long time too.... BC