It could be a good idea to adopt two kittens of the same shelter as kittens from the same litter are born and raised together and thus, somewhat familiar with each other, so you can decrease your kittens stress levels form going to a new home. Shelters especially encourage this behavior since kittens from the same litter are already used to each other, and thus, won’t need time to ‘become friends. However, just like the pros and cons of getting two kittens, there are also upsides and downsides of getting two kittens from the same litter. While adopting a kitten might be a fun experience for you- it definitely isn’t for your kitten- at least not immediately. Cats are creatures of habit, and having their entire environment changed can be pretty stressful. Also, getting two kittens of the same litter does have disadvantages because while most kittens from the same litter can live with each other without problems, some just won't get along very well, and that can mean double the trouble for you. Plus, if one of your kittens has some health issue, the other could have it too. And this also extends to behavioral issues, like aggression.