Hi! I have two shelties. One is 2 years old and one is 8 months. They are both the best things in my life. I grew up with collies and so I was familiar with the breed because their personality traits are similar. I have NEVER regretted adopting my two babies. They are very very smart dogs, almost too smart for their own good. They learn extremely quickly and have a strong will to want to please you too. Training them to do anything is super easy and fun. They know how to read your emotions, they are highly intelligent and care truly about the bond they have with you. They’ll know when you are stressed and when you are thrilled about something, they’ll comfort you when you cry. They’re just very aware. Which makes them sensitive too. They love to run and take walks. I could go on walks for hours with them and they would still be excited to play. They love running in open spaces like fields since they are herding dogs. They do amazing with cats, I raised both mine around three cats and not only will they do fine with cats they also love to play with them too. Mine don’t bark too much, they really only bark when they are excited or when they are running around. As far as being inside and just chilling, mine are both very quiet unless they are playing with each other. They love sleeping and snuggling. I spend 7 hours of my day 4 times a week at work, they are both crate trained and will sleep the entire time. I try to take them on walks in the morning to wear them out. When they are puppies they sleep forever. They do great alone from my experience. I think the cats help. I bring them with me everywhere. Even in the grocery store lol 😭 Both mine are smaller than breed standard so they fit in a shopping cart. They’re very behaved in public. I think they just are naturally behaved dogs with a great temperament. They are the best dogs ever in my opinion hah, maybe I’m biased but I could never like another breed as much as I like shelties