Nyx becomes more alert
Nyx became more alert and watchful, as if sensing something the family couldn’t. He would sit by the window for hours, his ears perked up at the slightest noise.

“Is he waiting for something?” Emma wondered. Even during their walks, Nyx’s vigilance seemed heightened, making Mr. Johnson remark, “
He’s on high alert.” This behavior added to their urgency to get him checked. The family felt like they were on the edge of a significant discovery.