The woman who lost her arm in a lion attack at a Queensland zoo is the sister of the owner, Stephanie Robinson.

A woman in her 50s was critically injured following a lion attack at Queensland's Darling Downs Zoo on Sunday morning. As investigations continue, questions are being raised about the zoo's safety procedures and whether its animal management protocols were properly followed.

A woman who lost her arm after being attacked by a lion in a Queensland zoo had worked with the animal for more than 20 years. Emergency services were called to the Darling Downs Zoo, a popular wildlife park near Toowoomba,