TIFU by trusting my husband's ability to diagnose my cat

So I just commented it on another user's TIFU and I thought I'd share it here because this story makes me laugh to this day. Obligatory not today.

Some background:

When I met my husband, I'd already had my cats for a year and a half. Before these two furballs, I'd only had dogs, so I had a lot of learning to do after a lifetime of being around dogs.

My husband was the same, he even claimed to hate cats due to a past experience - when he lived with his ex, she had brought in her long neglected family cat (whom she continued to neglect) who was very prone to biting people's ankles and very averse to being pet.

First time he went home with me, my girl cat (Oli) fell head over heels for him, to the point she would jump over me to get to his lap, cuddle with him everytime she could, sleep on top of his clothes, etc.

With my male cat Pepe was a whole different story tho, he's the sweetest boy, but very very shy.

So now to the story:

Almost 3 years into our relationship, we were watching a movie together and he was petting Oli. Then Pepe gets on the couch next to him and he starts petting him too - a very magical moment, as Pepe was starting to trust him! So I went to make some popcorn in the kitchen, letting them have their moment, when he starts shouting for me to come back.

I rush to the living room, he had this sad and serious look on his face, he says to me "futato... I was petting Pepe's belly, I found some growths... I think they might be tumours". So I rush to grab my phone, so I can send a pic to my vet and I ask him to show me. Two of my dogs had had tumours before, so this got me fairly worried.

He guides my hand on her belly, trying to find the spot underneath all that fur... And I find it.

It was his nipple. A perfectly normal cat nipple. He didn't know male cats had nipples.

EDIT: I wrote titty instead of nipple, fixed it now!

TL/DR: husband got me worried by diagnosing my male cat with tumours, turns out it was just his nipples.