My puppy is very muscular. I recently purchased a puppy on July 29 2021. He was born may 20 2021 and weigh 1.9 pounds when he was purchased. My question is does anyone have small “solid” yorkies? My puppy is very small in size( smaller than my 5.5 pound girl and 7 pound boy) yet he is 4.5 pounds and does not look it whatsoever. I have noticed his body is very solid and sturdy and boy he can jump. How is this even possible ? Also my boy went from 2.9 pounds to 4.5 in 1 month. Is it normal for him to have such a huge growth spurt? Tia |