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] .
Babies born close to their due date sit without support around 4 to 7 months. In comparison, a baby born 10 weeks early, at 30 weeks, will sit between 6 and 10 months of age. Most full-term babies crawl around 8 or 9 months. A baby born born 10 weeks early may not begin crawling until 11 or 12 months.