Si is a big, exuberant boy who doesn't know his size or strength, but has a heart big enough to match. He loves nothing more than to play with toys, whether that be fetch or tug, and is slowly learning how to calm down after play, because he can get a bit intense about it and will run himself ragged if you let him. He loves being pet and knows how to sit and shake a paw. He struggles with confinement, so crate training would be hard for him, but he isn't destructive and is house trained, so there probably wouldn't be much need to crate anyways. He hasn't been tested with cats, but seems OK with other dogs his own size. He would likely be too much for small dogs or small kids, but more due to his high energy and size than anything else.