Gosh, Pat, I've never heard of that. If both testicles are gone, then
what else is there to "get"?
The spraying part isn't that unusual. WAs he an adult when he was
neutered? Sometimes they just keep spraying, particularly if they're
older when they're castrated.
But it wouldn't hurt to ask. Do you have a pretty good vet you can call
and ask?

Sherry

You could have his testosterone level checked.  My cat was like
this...agressive behavior and sprayed.  I consulted an animal behaviorist
that suggested, among other things, I have my cat's testosterone level
checked to see if he was properly neutered.  I did and he was.  But it's
worth a try.

S.

Spock sometimes behaves like this and it is usually a response to
stress - in his case visiting children or noisy dogs.  He is neutered
too (at 6 months old).

With cats, I don't think it's possible to be "half neutered" unless the
cat had an undecended testicle - which the vet should have checked for
during the proceedure (can the vet count to "2"? - LOL).  I've watched
vets neutering male cats a couple of times and, at the risk of grossing
people out, the vet makes a small incision in the scrotum and kind-of
pops the tescicles out and ties and cuts them at the "neck" near the
body.  That should ensure that the entire testicle is removed.

My father used to have an extremely aggressive cat, a desexed girlcat
called Diamond. Dad and his family (including a girl who was 5 years
old when Diamond arrived) lived with it for years until a knowedgeable
vet diagnosed an inborn, internal medical problem for poor Diamond.  I
can't remember the details of the problem, but the upshot was that
Diamond was in a lot of pain most of the time, which accounted for her
behaviour.  After the confirmation of the diagnosis and information
that it was incurable, Dad thought the best thing was to have Diamond
PTS and to end her life of painful misery in the most humane way
possible.

I doubt this is the problem with Eli - it sounds as though he really
needs to have some "me" time, but it might be worth checking with a vet
once your house-buying and moving are finished.

Tish

It's possible but not likely.  Testes in a cat are extremely easy to
remove.  It is more likely that he was neutered late and/or is in a
situation where intact males are constantly marking territory.

-L.

It's possible but not likely.  Testes in a cat are extremely easy to
remove.  It is more likely that he was neutered late and/or is in a
situation where intact males are constantly marking territory.

-L.

Does he spend a fair amount of time indoors? More to the point, does he
drink water while indoors? If so, adding Rescue Remedy to his water source
might help a bit with his aggression.

I think in all male mammals a condition involving
"undescended" testicles is possible.  I've heard of it in
dogs, so it's probably possible in cats, too (and humans,
although I think they take care of it more-or-less at birth,
in that case).  However, all cats - male or female, neutered
or not - will spray and exhibit aggressive behaviour if
there are territorial issues.  How many other cats do you
have, and how does Eli get along with them?

My theory is that being a "male" is as much mental as it is hormonal.
If the cats testes have secreted enough testosterone to wire his brain
as "male," he's going to have a "male" brain.  I have four neutered
cats.  All were neutered about 8 months into their lives and all seem to
have very male identities.  Aggression, territoriality, facial
expressions, toughness, etc.

This may just be legend or myth, but I have heard of cats that had more
than two testicles - a third one that isn't descended, that the vet
misses.  You can have a blood test, you know, to check his testosterone
level.

Chak