[Ozzie'sperson]

I found this passage on the first site of particular interest:
A retrospective study of cardiac tumors in dogs showed that there was a 5 times greater risk of hemangiosarcoma, one of the three most common cancers in dogs, in spayed bitches than intact bitches and a 2.4 times greater risk of hemangiosarcoma in neutered dogs as compared to intact males.

This is what my first Yorkie died from at 11.5 years -- and he was not neutered.
We had Ozzie neutered a year ago -- at age 8 -- because the vet thought a loss of hormones might naturally repair a minor hernia. It didn't.

What I didn't see in much of these commentaries is anything about having an older dog neutered. Their stats usually talk about animals 1 year or younger.