We have a 13-year old cat, Bear, that has recently started humping a
couple of our 8-month old altered kittens. There is one male in
particular that he humps, but has been seen terrorizing one or both of
the others.

If Bear is near these guys he climbs on and grabs their scruff, and
starts meowing like he's in pain. His meows can be heard the length of
the house.

Other than annoying us all, could he have medical issues? His last blood
test showed one of his kidney values a little off, possibly the start of
CRF. But humping?

He did hump another kitten quite often a few years ago, before she was
fixed. After her spay, that was it. It was nothing like this, and these
kittens are fixed.

Any ideas? Does he need to go to counseling?

Thanks,

Rhonda