The nervous system needs to progress from automatic processes toward purposeful behavior.
The surgical site needs to heal.
Nutrition eventually has to resume.
One functioning system buys time for the others.
It does not guarantee that they will recover.
The Next Major Milestone Would Be Wakefulness
Veterinarians would look for spontaneous eye opening rather than simply opening the eyelids during an examination.
Then they would evaluate what happens afterward.
Does the dog appear aware?
Does it track movement?
Does it respond differently when a person approaches?
Does it orient toward sound?
A patient can open its eyes while remaining severely neurologically impaired.
The quality of the response matters.
Head Control Would Be Another Important Step
Once consciousness begins returning, the dog should eventually begin controlling its own posture.
Lifting the head requires neurological coordination and muscular strength.
Maintaining it requires more.
A dog that can raise its head only briefly may still be very weak.
A patient that progressively holds it longer is showing a meaningful trend.
From there, clinicians can begin asking whether the animal can reposition itself.
Repositioning Would Show Increasing Independence
A dog that remains completely recumbent depends on caregivers for basic positioning.
That creates additional concerns.
Pressure can build on areas of the body.
Muscles weaken.
The patient may be unable to make itself comfortable.
Once the dog begins shifting independently, something important has changed.
The brain is directing movement.
The muscles are responding.
There is enough physiological reserve to execute the action.
That may appear like a tiny improvement.
Clinically, it can be significant.
Standing Would Be a Much Later Milestone
A dog emerging from a prolonged period of unconsciousness may not be able to stand immediately.
Critical illness causes rapid muscle loss.
Surgery adds pain and weakness.
Days of inactivity reduce coordination and endurance.
If the dog eventually attempts to rise and fails, clinicians would not automatically interpret that as permanent neurological disability.