A pet detective who is temporarily suspended after rescuing a dog from a locked and overheated car says he was just doing what his mandate asks him to do – save animals' lives.

Tre Smith, an animal cruelty investigator for the Toronto Humane Society and former mall security guard, is not allowed to investigate animal cruelty complaints pending an investigation in which he handcuffed the owner of the dog to a car.

But the highly publicized pet saving incident has ignited emotion and feedback from hundreds of pet owners and swamped the Toronto Humane Society with letters and emails calling for his reinstatement.

On July 31, Smith responded to a call that Cyrus, a 50-kg Rottweiler, was locked in an overheated car. The Toronto Humane Society investigator smashed through the car window, rescued the dying dog, who was slumped and foaming at the mouth, and handcuffed the irate owner to the car. He then rushed the dog to a hospital, leaving the man there handcuffed until police arrived on the scene.

"I was trying to perform my job to the best of my abilities given a very difficult, threatening and abusive situation," said Smith.

But reports soon followed that the handcuffed dog owner was beaten by the crowd and was bleeding when police arrived, so the Ontario SPCA has hired a retired Ontario Provincial Police officer to probe the incident and determine whether Smith had followed proper protocol or overstepped his limits.

It seems public sentiment for Smith in cyberspace is growing. There are more than 10 Facebook groups calling for his reinstatement.