WorldAnimalFoundation.org is reader-supported. When you buy through links on our site, we may earn an affiliate commission. Learn More Some dogs seem to learn new skills almost as soon as you show ...

Stella, the German Shepherd, is the perfect example of this blink-and-she’s-grown phenomenon. In a precious TikTok, she goes from a teeny puppy wearing blue hair bows to a full-sized adult dog still ...