"Test #703 has been completed, confirmation of passing samples. Project #21223267 is now entering Buck age, this Dr. Holmes, & all I can say now is - we're excited."

Dr. Holmes happily smiled into the camera as she heard Jacob chuckle & a few static noises & playful growls.
Behind her, the two young males were blended into a heated game of Tug-O-War, they were strengthening His teeth & jaw-line.
Jacob gasped as he felt the pressure from his grip on the rope suddenly disappear, he stumbled from the force before widely grinning & laughing as he looked at Dr. Holmes.

He enjoyed these new 'play-dates', they usually took place after He had been napping, it was something about 'keep His body moving', He felt so drained & exhausted when He woke up, but having both Jacob & Dr. Holmes back never disappointed Him, especially when they played with Him.
He was aware of Himself growing, nearly as tall as Jacob, nearly stronger & faster too, He felt mischief & happy when Jacob tried to snatch the rope out from His jaws - He shook His head violently before turning & happily striding off to the other side of the cell.

Dr. Holmes hummed happily as she crossed her arms & watched, Jacob pleaded once more before giving up as Slender travelled with pride to the other side of the cell, they had sedated Him in order to move Him to a bigger & more comfortable environment. It hadn't been easy the first few times, however, He either shrieked & went into panic - or simply snatched the device & broke it in two with His jaws.

"Fine, I give up!"
Jacob threw his hands in the air with a tired smile on his sweaty face.

Dr. Holmes approached Jacob, whispering something to him as they packed up their things to leave. Before they walked out though, Dr. Holmes planted a kiss on Jacob's cheek, both smiling as they said their farewells to Slender & left.

The creature was busy nawing on the tattered rope, He had come to accept the relationship between Dr. Holmes & Jacob, for a fact, He didn't care if they were together or not, as long as they were safe & kept coming back for visits & play-fights.

Once they had left, He thought about what had happened before-hand, His legs & abdomen still stung with a draining pain, He was told not to even look or think about touching 'down there', the pain usually went away after He was distracted. He had been unconscious, often sedated, therefore having no idea who did what to him in those long 8-hours that He was strapped to a table, on His belly, asleep.

He did, however, take note that when Dr. Holmes was carrying a tray full of white-liquid test-tubes, that she simply stated they were 'samples'. He didn't know anything more than that, He probably wouldn't want to know more than that.

The 'play-fights' He had with Jacob were some sort of 'exercise' He had after waking up, to get the blood flowing through His body again, getting His mind off the pain in His legs. That's why they took so long afterward too, these sorts of things would usually last 9-hours twice a month, or so.

He wasn't so bothered by it, as long as He wasn't in too much pain & they kept coming back to play with Him.
Everything was good.