The world’s biggest animal hospital has become the focus of an international controversy over the treatment of injured animals.

Griffin Hospital, which has more than 1,500 staff, is the world’s largest animal hospital and operates in Queensland, Western Australia, New South Wales and the Northern Territory.

The facility has seen some of the biggest animal incidents in recent times, including a dog being shot in the head and a baby dolphin being killed.

The Queensland government has been under pressure to address concerns about the treatment and care of injured wildlife.

The state’s Environment Minister, Nick Kypreos, has called for an investigation into the hospital and animal welfare, with animal welfare experts expressing concern over the hospital’s treatment of animals.

The ABC has contacted the Queensland Department of Environment, Forestry and Water Resources (DEPW) for comment on the investigation.

The Department did not respond to a request for comment.

Animal welfare advocates and animal health experts are calling for a complete investigation into animal hospitals.

“This is really concerning,” animal health expert, Dr David Renton, said.

“The fact that it’s a major animal hospital, where people can be seriously injured, is not something that should be happening in the first place.”

Dr Renton said it was “incredibly concerning” that the state was not properly regulating animal hospitals as part of its plan to make the state a “world-class animal health and welfare state”.

“There needs to be a thorough and complete review of all animal hospitals,” Dr Renton told the ABC.

“If there is not that, there’s a danger that we’ll lose the ability to provide this service in this country.”

Dr Chris Foy, director of the University of Queensland’s animal welfare and health division, said it would be “a massive oversight”.

“I think there’s been a lot of bad things going on at the Griffin Hospital in Queensland over the years,” Dr Foy said.

He said the hospital had not only a “massive” number of staff, but also a “huge number of animals” and had been involved in more than 600 animal incidents over the last decade.

“There’s a number of problems, I don’t think we can say there’s ever been a situation like this,” Dr Manton said.

The Government has been criticised for its handling of the Griffin case, with Opposition Leader Mark McGowan accusing it of not taking seriously its obligation to ensure animals were treated humanely.

Topics:animal-welfare,health,environmental-health,animal-behaviour,health-and-imaging,human-interest,healthcare-facilities,healthpolicy,environment,brisbane-4000,qld,australiaMore stories from Queensland