Yep, my male and female Bulldozer and Blossom are exactly like your guys. Bulldozer is "laid" back, or lazy lol. That's why his nick name is Dozey. He likes to sleep all day if he can, and he absolutely hates to walk. He does play with his sister, but maybe for 20 mins. and then he will sleep. We have to bribe him with a great to get him to do things. Lol, and he is a big snuggle bug, he's happiest laying beside you and cuddling. Blossom on the other hand has 2 speeds crazy and crazier. She loves to play all day, we have to stop her sometimes because she will get out of breath, and she loves to go on long walks, she would walk for hours if we let her. She will eventually settle down and lay with you, but when she's ready. She loves to snuggle in the evening, and will sleep beside you when she's tired. They are siblings and litter mates, but have very different personalities.