A pet sitter who had a five-star rating on a popular app allegedly crammed the animals into a small shed during an 86°F night. Four dogs Gabriela Masak was looking after tragically died and three were left fighting for their lives, it has been revealed. The pet sitter, who had an average of five stars based on over 900 reviews on the Rover app, sent panicked texts to dog owners in the early morning of June 29, warning them that their pets had suffered heatstroke and were being rushed to a vet in Houston, Texas.