Kevin left the hospital after a week with a breathing tube in his throat and another tube to feed him through his nose since he can't yet swallow properly, according to Lettieri.
A family friend said a fundraising website has received about $6,000 in donations for Kevin. The Maricopa Health Foundation also established a website that has received 50 donations.
The social media support for Mickey doesn't indicate that people care more about a dog than a child, Harold Herzog, a psychology professor at Western Carolina University who studies animal interaction.
He said it's likely that lovers of pit bulls, specifically, are driving Mickey's Facebook following. Pit bulls have been saddled with a bad rap — fair or not — of being one of the most dangerous dogs. A lot of that reputation is thanks to other mauling cases, Herzog said.