How dangerous are spaying and neutering operations?

Overall, sterilization is not an especially risky operation, and it is unusual for cats to develop an infection as a result of the procedure. After the operation, however, it is important to keep the animal warm and comfortable. The vet will inject the cat with antibiotics, whose effects usually last three days depending on the type used. This will also protect the cat from catching illnesses like the flu from other cats during the same three-day period.