u/Emergency-Recipe-893

We recently adopted a Rottweiler from someone on FB he’s 5 years old and was raised & grew up w/ a 4 year old. I have 2 littles 8m & 2 years old & I also have a rottie who’s 3 and she’s used to my 2 littles and never knocks them over and is overall much calmer than he is. This is only my 2nd day having him but he’s great with everything else they can take his toys and do whatever but he just doesn’t understand how big he is. When he comes running down the hall he will knock them over or step on them. Any tips to correct this behavior?