Do Neutered Male Cats Still Try to Mate? What's Normal After Surgery

In this guide

Neutering removes a male cat's testicles, which cuts off the main source of testosterone and, over time, largely eliminates mating behaviour. But 'largely' and 'immediately' are not the same thing, and this catches some owners off guard in the weeks right after surgery.

Why mounting behaviour can continue for a while

Testosterone does not vanish the moment surgery is done. It takes time, often four to six weeks, sometimes longer, for hormone levels to drop and for learned behaviours built up over months of being intact to fade. During this window, a recently neutered male may still show mounting behaviour toward other cats, cushions or blankets, still spray occasionally, and still show some interest in a female in heat, even though he is no longer fertile.

What tends to persist longer term

• Cats neutered as adults, particularly after a year or more of age, are somewhat more likely to retain some mounting or marking behaviour than those neutered young, since the behaviour has had longer to become habitual
• Individual personality plays a role too, and some neutered males simply retain more mounting behaviour than others regardless of age at surgery
• True mating ability, meaning fertile mating, does not persist. A neutered male cannot father kittens, even if mounting behaviour continues

When to be concerned

If mounting or spraying behaviour has not eased significantly after two to three months, it is worth a vet check. Occasionally this points to incomplete removal of testicular tissue, though this is uncommon, or to an unrelated behavioural or stress trigger that happens to coincide with the timing. Most of the time, patience through the hormone clearance period is all that is needed, and the behaviour fades on its own.

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