How do you adopt a stray?

I gave up and ( with testingcheats on ) right clicked on him and added to household.

As far as I understand things, which therefore can be wrong, there's a period during which strays remain stray. After that, they're merged with a randomly generated sim as part of their household.

In my case, it popped up after a looooooong time. But when it did, it popped up RIGHT after I clicked him, not in 'Friendly', 'Mischief', or 'Mean' section.

You can go to manage households, unplayed households, find that cat or dog, transfer sims between households, and move your cat to your household. I hope you found this good help (Sorry about my English).

Hi everyone!! I came to this website for help and couldn’t find anything and then shortly after figured it out- so of coarse I wanted to revisit the site to help you guys and others! Bring up the chest bar ( cntrl + shift + c) and type “testingcheats on”
Then, return to the pet you wish to adopt and press ( shift + left click)
Click the option to “add to family”. ❤️

I made friends with a stray cat and then all i did was go to manage worlds - manage households - found the stray cat i made friends with on 'other households', clicked on him moved him to my household. and now lives with me

I adopted a stray in the beach so you don't need to bring them home necessarily. The option was there after I clicked on something like "offer friendship".

I've been trying this too, with no luck so far :(

Well we are friends and I offered friendship and did the share the love interaction and still no option to adopt. This is the only problem I've come across so far.

Some cats give you the option a lot sooner than others. The cat you are speaking of though , I don't know what's wrong in it's case, It should have let you adopt by now. Good luck.