During the day, Pepper does not seem to need Moose beneath, beside, or even particularly close to her.

The four-year-old Chihuahua mix can curl up on her own bedding inside the shared kennel. She drinks, changes positions, and rests without trying to hide beneath the much larger dog.

Then the lights go out.

Pepper gets up almost immediately.

She crosses the kennel toward Moose, ducks her head beneath the eight-year-old Great Pyrenees mix, and keeps going until her entire body has disappeared underneath him.

Her back nearly touches his belly.

Her paws squeeze into the small spaces between his four legs.

Moose does something equally unusual.

He does not walk away.

He remains standing over Pepper.

Sometimes the large dog holds that position while Pepper turns beneath him, lowers herself toward the kennel floor, and finally becomes still.

Only after Pepper has settled does Moose begin to move again.

The same two dogs can spend much of the daylight resting separately.

But when darkness arrives, Pepper seems determined to put Moose between herself and everything above her.

They Had Spent Months With Nothing Over Their Heads

Pepper and Moose came to animal control after living for months in an outdoor enclosure without a roof.

Staff knew that much about their previous environment.

They did not know exactly what the dogs experienced there every night.

That distinction mattered.

It would be easy to construct a dramatic explanation for Pepper's behavior—to decide that a particular storm, sound, animal, or frightening event had taught her to hide.

There was no evidence for a specific event.

What staff did have was the environment Pepper and Moose had lived in and the behavior Pepper showed now.

For months, the two dogs had been exposed to an outdoor space without overhead shelter.

Now Pepper behaved normally in the light.

When the kennel became dark, she crawled underneath the largest familiar object available.

Moose.

At First, It Looked Like Pepper Was Simply Following Him

Their size difference made the scene difficult to miss.

Moose was a large Great Pyrenees mix with enough space beneath his body for a Chihuahua mix to fit.

Pepper was small enough to disappear almost completely.

Staff initially saw her moving toward him after the lights dimmed.

Then they realized she was not merely approaching him.

She was going underneath.

Head first.

Shoulders next.