I see a lot of conflicting advice online, so I'm looking for facts and stats (e.g. based on veterinarians' reports), not more hearsay.
My dog is a 2-year-old, 66 lb. boxer-ridgeback (probably, we're not sure), that, at some point was given an ice cube and loved it. Whenever I make a smoothie, she hears the sound of the freezer door opening and comes running for an ice cube, to which I oblige. This is several times a week, but never more than one ice cube each time, and has been going on for at least a year.
Is there compelling evidence that I should stop?