When I was 5 I had a pet lamb who I bottle fed. But he was soon mauled to death by a pack of dogs. Sorry, I misremember - actually, he was just mauled so badly my dad had to shoot him and then burn his body in pile with his fallen comrades.
A few years ago I had a pet hedgehog. He was a real night time kind of guy, not crepuscular like I had hoped. He was really cranky in the day but at night he was a madcunt. If you opened his cage after about 10:00pm he would rush eagerly out into your hands and then want to run around the house for hours.
He would chew my dirty socks and undies and then twist his head around and spit onto his back. Apparently it is called anointing and it is perfectly normal but the first time I saw him do it I thought my stench had killed him.
Also, we lived in a hotter climate than his species was accustomed to, so he would sleep on his back all day with his soft furry belly in the air and his limbs splayed out.