510 ILCS 70/2.01b

"Exigent circumstances" means a licensed veterinarian cannot be secured without undue delay and, in the opinion of the animal control warden, animal control administrator, Department of Agriculture investigator, approved humane investigator, or animal shelter employee, the animal is so severely injured, diseased, or suffering that it is unfit for any useful purpose and to delay humane euthanasia would continue to cause the animal extreme suffering.