Which method is NOT used for urine collection in animals?

Manual squeezing of the bladder is not a recognized or accepted method for urine collection in animals, primarily due to the potential for causing harm or distress to the animal. This technique can create unnecessary pressure on the bladder and may lead to complications or injury if not performed properly.

In contrast, methods like cystocentesis, which involves puncturing the bladder with a needle to collect sterile urine directly, are widely utilized in clinical settings. Catheterization involves inserting a tube into the bladder to collect urine, allowing for a sterile sample in a controlled manner. Voluntary catch refers to allowing the animal to urinate naturally while being observed or collected in a receptacle, which is a natural method that minimizes stress for the animal. These accepted practices align with animal welfare considerations and ensure safe and effective urine collection.