The most common sequelae of anesthesia in dogs are complications such as acute renal failure after surgery, with symptoms such as oliguria or anuria. The occurrence of sequelae of anesthesia in dogs has a lot to do with the animal's physical condition before surgery, whether it is dehydrated, whether monitoring is in place during surgery, and whether post-operative care is in place. To avoid this phenomenon, an appropriate amount of balancing fluid can be added during or after the operation. In fact, the risks of surgical anesthesia are often higher than the surgery itself, so we must conduct a careful examination of the dog before surgery to reduce the possibility of sequelae of anesthesia and give the cute little life an extra life guarantee.