While your children (or pets) are doing something they really love, sneak up on them and take a picture without them knowing so you catch them in the moment, not in a pose.
My children are grown and don’t live at home anymore so I took a picture of Percy.
When my husband leaves for work in the morning, Percy and I usually go outside and play in the yard for a while before we start the day. We make him chase a frisbee or a ball and make him get a good workout!
He is usually quite worn out when we come back inside and he often goes back into his crate for a snooze. He sleeps in his crate so that is his bedroom and he feels very comfy there. He actually goes to bed by himself most nights.