When Should You Spay or Neuter Your Pet? A Research-Based Guide by Species and Breed
Cats: by 5 months. Dogs under 45 lb: about 6 months. Bigger dogs: often 9 to 15 months, case by case. What AAHA, the AVMA and UC Davis research say about timing.
Guides and data
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Spay & Neuter -
Spay & Neuter The Health Benefits of Spaying or Neutering Your Pet: What the Research Shows
Dogs spayed before their first heat have about a 0.5% mammary tumor risk (ACVS). Neutered male cats lived 62% longer in Banfield data. Here's what the research shows.
