For most of the night, Murphy sleeps normally.

The six-year-old Boston Terrier mix curls up on the low cot inside his shelter kennel, lowers his head onto the bedding, and closes his eyes.

The hallway grows quiet.

Murphy sleeps.

Then, without warning, he wakes.

His head shoots up.

He stares toward one empty corner of the kennel.

A bark erupts.

Then another.

Within seconds, Murphy is on his feet, barking frantically toward the place where two blank walls meet.

But what happens next is stranger.

He does not run away from the corner.

He runs directly toward it.

Murphy pushes his forehead against the wall, wedges his face into the narrow angle, and stands there trembling.

His legs eventually begin to buckle.

Still, he does not move away.

When his body finally sinks to the floor, Murphy curls up beneath the same corner he appeared terrified of moments earlier.

And falls asleep again.

A few hours later, the entire sequence may repeat.

The Corner Is Empty

That is the first thing staff check.

There is no toy.

No moving object.

No obvious opening.

No animal hiding there.

Nothing visible appears when Murphy wakes.

Yet his attention repeatedly goes to approximately the same place.

Because the behavior is so specific, staff do not dismiss the environment without investigating it.

Dogs can detect things humans overlook.

A Blank Wall May Not Be Blank to Murphy

There could be sounds traveling through the structure.

Pipes may run behind a wall.

Heating or ventilation equipment can create vibrations.

An animal or insect outside the kennel could produce faint noises.

Another dog moving in an adjacent space may be audible without being visible.

Smells can also collect in places humans perceive as empty.

Before deciding the problem exists entirely inside Murphy, the shelter has to consider what might exist around him.

But the Timing Makes the Behavior Even Stranger

Murphy does not spend the entire day staring at the corner.

He can walk past it.

He can eat nearby.

He can lie on his cot with the corner clearly visible.

The strongest episodes happen after he has been asleep.

Murphy wakes abruptly.

Looks toward the corner.

Barks.

Then runs to it.

That connection between sleep and the behavior becomes impossible to ignore.

Staff Begin Watching What Happens Before Murphy Fully Wakes

Does he twitch?

Does he vocalize while asleep?

Do his legs move?

Does his breathing change?

Does a sound occur immediately before his eyes open?

Does he appear fully alert when the barking begins?

Those details could help distinguish several very different possibilities.

A dog startled from sleep is not necessarily experiencing the same thing as a dog having a neurologic episode.

And neither can be diagnosed simply from a strange nighttime behavior.

Murphy's Boston Terrier Anatomy Matters Too

As a brachycephalic mix, Murphy has shortened facial anatomy.

That makes sleep and breathing worth paying close attention to.

Some brachycephalic dogs can have airway problems that become particularly noticeable during rest or sleep.

If Murphy snores heavily, struggles to breathe, repeatedly wakes gasping, or shows other respiratory abnormalities, those signs deserve veterinary attention.

But breathing difficulty alone would not explain why he repeatedly targets one particular corner.

That part remains unusual.

The Barking Looks Like Fear

Murphy wakes rigid.

His eyes are wide.

His barking is abrupt.