(Portland, OR) -- Veterinarians at Oregon Humane conducted a super-sized spay/neuter event last week. At their Portland and Salem campuses, they spayed or neutered 269 dogs and cats in a one-day event. The demand for spaying and neutering animals far exceeds capacity, so they conduct these events twice a year. Many times, people can't afford to get their pets spayed or neutered which results in unwanted pregnancies.