These include a technique called laser lithotripsy that breaks down stones into smaller pieces that can then be voided out, and a procedure called voiding urohydropropulsion, which is a technique that involves manually expressing stones out through the urethra while the patient is sedated. (pamsdogtraining.com)
When cats are very fortunate, a single small stone or cluster of stones can be removed through a non-surgical technique called urohydropropulsion. (2ndchance.info)
The vet can remove them through surgery, by using a non-surgical approach known as urohydropropulsion (where a catheter is inserted to flush out smaller stones) or through a process called dietary dissolution in which changes to your dog's food will gradually dissolve stones in the bladder. (vmdah.com)