Yes
no, you do not need your Sims 3 disk, but you will need the disk for the expansion pack you want to install.
You need to have Sims3 installed on your computer in order the be able to use ANY expansion packs.
You need the expansion pack Late Night to create a six-pack for your Sims.
You need the Sims 3; World Adventures expansion pack.
The Expansion Pack after Sims 3 World Adventures is Sims 3 Ambitions
you get it on Late Night expansion pack
You need the base game the sims 3 to buy an expansion pack. Your question asks if you need the sims 3 pets? You do not need the sims 3 pets to buy other ep. If you don't have the base game or the sims 3 pets then I recommend you get the sims 3 pets plus because that comes with both.
You have to have the Sims 3 Pets expansion.
Yes you will because the Sims Generations is a expansion pack so you will need to buy the Sims 3 to use it.
Yes. You need an expansion pack to in order to get a diving board in sims 3 so you need to find it in the regular version.
Yes. Now there is the sims 3 pets, the sims 3 pets expansion pack also the sims 3 plus pets.
Yes, you need the sims 3 base game to get any expansion pack or stuff pack.