Secondly, they aren't white.. While some double merle dogs are almost pure white, they can go the complete range all the way up to a dog that you would think is a just a normal merle (most fall somewhere in the middle).
In between five and six months, your baby usually starts to sit up with your help, holding his head in an upright position, keeping the back straight. He may even be able to sit for a second or so without taking any assistance from you, before toppling down after a while [1] .
Red Flags to Watch Out For. Don't worry if your baby isn't sitting up by the 6-month mark. Every baby develops differently and there's a wide range of normal when it comes to meeting milestones, Dr. Moorjani says. With a little more time and patience, your baby will likely start sitting up.