This mother returned the family dog to the animal shelter, an act that has infuriated the internet after screenshots of a text message exchange were posted in this viral thread . The very thought of this happening to the poor teen and their dog breaks out heart. It's astounding how cold and callous some people can be. The screenshots were shared on Reddit 's r/ MildlyInfuriating subreddit by Redditor u/Bucket0fMilk, who is reportedly the son of the mother in the text message exchange. Despite d…