Jake and Rex were about to approach until a male student came up from a hallway. "Hey, someone else is coming." Rex called out. It was a brown haired guy wearing a casual long sleeve and jeans. He noticed the Lion girl stroking her cock. "Can you two get a room or something?" He asked thinking this all normal. The lion girls cock head started lifting and cum spewed from her mouth, causing the guy to fall and lay in a cum puddle.
"Ugh... Like I said..." He said irritated. Suddenly he felt a weird sensation from the top of his forehead... Two sensations actually. "Huh?" He felt the top of his head to notice two points were poking out of his skin. Two holes started to open on each side of his forehead as two hard growths emitted from the holes. "Wait- ugh. What is-" He was struggling to talk as his skull was being changed from the inside as two large horns were poking out his head. Not only that, but his nose started to stretch far and wide along with his mouth. His nostrils spread further apart and turned pink, creating a bovine snout. His ears stretch out and reshaped into points, growing brown fur on the tips.
The lioness stared at the change boy. "Watch your mouth when we talk, cowboy." The cock head said as she walked to sit at a table to watch the rest of his change. The guy changing was feeling build up from his back, as a long ropy tail shot out from his pants and grew a brown tassel. His new tail flicked around as if it were looking for insects to swat. "Oh God, this is weird... More.. moroOOoo!" The male student let out of his mouth.
The best part was happening as Jake and Rex watched his bulge in his crotch grow. "MooOOOOoo!" He mooed as his jeans ripped with giant balls and cock to match. His tip began to develop two additional holes that provided as eyes, and long pointed ears pop from the sides of it. Brown hair started flowing out of the top, and two more holes came in becoming a snout itself. Lastly, two bumps at the forehead cock started poking out into long curled horns as he moaned in pleasure. "Oh my goOOod!" He mooed as his cock finally fully developed a mouth drooling with cum. "Now that's moOOOoore like it." The cock head mooed.
Jake and Rex watched their work with envy looking at their two new subjects. "You see this?" Jake asked Rex lifting his shaft up to let him get a better view. "We did that! And they're enjoying it too!" Jake said swishing his tails happily. "Quite the sight." Rex commented. "The Lion girl is still up for keeps. Wanna make a move now?" Rex asked linking cum from his lips.