Suzy squee-ed with delight and hugged limp-doll-like Jeff tight for a second. "You are going to be the CUTEST mini-aussie, just like I've always dreamed of having! And we'll do tricks, and take walks, and..."
The tingling had continued, and Jeff tuned out as Suzy rambled on, more concerned with the changes he was feeling beginning to take place. His tiny fingers were rapidly shrinking even as his limbs lengthened, filling out from tiny, Barbie-sticks. Prickles of fur pushed out all over, and he could see that it was multi-colored, even just on his arms: white on his reshaping hands, and then brown on his right arm and... grey with black spots on his left? He was going to be one crazy looking dog, he thought.
"Ohmygosh! Look at you! So fluffy already! You have white fur all over your chest!" Jeff wasn't sure how Suzy was keeping hold of his growing form on her lap, but her fingers were gentle on his sides as he expanded and rounded.
His legs shortened, and he could feel a shift in his hips as they realigned. A pulse just above his butt signaled a new appendage growing, and Jeff awkwardly twisted his head to look for a tail. He felt his neck stretching as his spine and skull changed, and suddenly he could easily see his own back. Something wiggled under his severely stretched Barbie mini-skirt, but nothing emerged from the bottom.
The fur had lengthened, and just in time, too, as his doll clothes suddenly disappeared. Grey, brown, black and white fur covered him completely, so he was thankfully not naked in front of his sister. Suzy's thumbs were stroking his sides, and she gently lowered him onto her lap and began petting him in earnest.
Jeff was shocked by how good Suzy's pets felt, and he tilted his head back and closed his eyes as she stroked down his spine. His hands and feet had become paws, and he jostled a bit on her thighs to sit more comfortably.
"Just your head left, and then you'll be the cutest dog we've ever had! ... Get it, Jeff?" Suzy laughed at her joke, continuously petting him.
He opened his eyes, only to blink rapidly at what he could see in front of his face. His nose had darkened and was pushing outward along with his mouth, while the colors of the room around him faded to greyscale. He could feel his ears as they elongated and flopped against his head, and a million smells suddenly assaulted his nose.
*Holy cow,* he thought. *I'm a freakin' dog.*
"HOLY COW!" Suzy squealed. "You're a freaking DOG!!!"