Great start !!!
Remember no flash close to the fur babies eyes. Make sure you are several feet away to use the flash on them.
Try using a faster ISO so you don't need the flash. This means you can use P mode or other, but not the Green Box mode. You used 400ISO, try bumping it to 800 and a faster shutter speed, these were at 1/60. P mode will set the camera for you and you set the ISO.
Lets see some more. It is an amazing camera. Tac sharp pictures.
Katz