Hi my puppy I've had for 4 weeks seems to be sleeping more than usual today, she's eaten her food but less than she usually does. No change in bowel movement and no sickness. Seemed her usual crazy self this morning. She had her second vaccination on monday. She's 12 weeks old. Is this normal behaviour in puppies? I'm a neurotic owner my husband thinks she's just catching up on sleep she's missed out on other days when she doesn't seem to sleep enough.