Which of the following is NOT a method of Schedule 1 killing for animals other than foetal, larval, and embryonic forms?

The correct answer highlights a method that is not considered a Schedule 1 killing technique for certain animal forms. Schedule 1 methods are designed to provide a rapid and humane death to animals, and they are strictly regulated to ensure welfare standards.

Electrocution, while sometimes used in various contexts, is not classified under Schedule 1 methods for this specific concern. Electrocution can cause distress and should only be employed in controlled situations where it adheres to guidelines ensuring humane treatment, which makes it less aligned with the intended methods outlined for Schedule 1 considerations.

In contrast, exposure to increasing CO2 concentrations, concussion by striking the cranium, and overdose of anesthetic are recognized methods that are designed to induce immediate loss of consciousness and irreversible death, fitting the criteria for humane killing in accordance with welfare legislation. These methods aim to minimize suffering, a key aspect of Schedule 1 procedures, and are evaluated to ensure they meet humane standards effectively.