Sedated animals make several appearances in Season Four due to Dr. Norman.
Occurrences[]

Dr. Norman practices anaesthesia on animals e.g. the sedated armadillo he was holding while talking to George. ("Borderline Personalities")

Lindsay and Marky Bark find an iguana that has been sedated, probably by Dr. Norman. ("Red Hairing")

A Pony in the colony sleeps on the ground, assembly from sedation as Dr. Norman is present. ("Borderline Personalities")