Final answer:
Cystocentesis is a procedure that requires an anesthetized patient and a distended bladder that can be easily palpated. It does not have to be performed exclusively in female animals. Having an ultrasound available can be beneficial but is not essential.
Step-by-step explanation:
In order to perform a cystocentesis, there are a few requirements. First, the patient needs to be anesthetized to ensure their comfort and stillness during the procedure. Second, a distended bladder that can be easily palpated is necessary for successful cystocentesis. This allows the veterinarian to locate the bladder and insert the needle accurately. It is not necessary for the procedure to be performed only in female animals. Lastly, while it is not a requirement, having an ultrasound available can be helpful in guiding the needle insertion and ensuring the procedure is performed safely.