We talk about merle a lot in this handout, so it seemed. like a good idea to explain what it is (and isnât). The. most important thing to remember is that merle is a. color pattern, not a color by itself. Merle dogs can. come in a variety of colors. The most.
Two years: Toddlers begin walking up and down stairs using a non-alternating stepping pattern with hand held or rail assistance. Three years: Children begin walking up the stairs using an alternating stepping pattern without the handrail and down stairs using a non-alternating stepping pattern. Four years: Children begin walk up and down the stairs using an alternating stepping pattern without support.
Red flag: If your child isn't toddling by 14 or 15 months, bring it up with her doctor. This is still within the normal range of development, but now's a good time to check for anything that may be delaying the milestone. 16 to 18 months. With help, your toddler can walk up and down stairs.