There is no reason to test the injured paw by repeatedly placing him on the floor to see whether he will use it.
His behavior has already provided useful information.
He does not want to bear weight.
Forcing the issue could increase pain or aggravate damaged tissue.
The immediate questions concern the wound itself.
How deep is it?
What structures are involved?
Is there foreign material inside?
Is bone or joint involvement possible?
How compromised is the surrounding tissue?
Contamination Matters
Parking lots are not clean environments.
A deep open wound exposed outdoors can collect dirt and bacteria.
Pico's body is visibly dusty, but the contamination that matters most may be the material inside the wound that cannot be judged from the outside.
Proper cleaning and treatment have to balance removing contamination with protecting viable tissue.
Swelling Can Tell Only Part of the Story
A severely swollen paw may result from inflammation after trauma.
Infection can contribute.
Bleeding or tissue damage may contribute.
There could also be an injury farther up the limb.
Watching Pico hold the paw against his chest cannot distinguish among those possibilities.
That is why examination—and imaging when indicated—matters.
His Entire Leg Needs Attention
The paw is the most obvious injury.
But veterinarians cannot assume it is the only one.
Pico may have compensated for the painful foot while moving through the parking lot.
There may be soreness elsewhere.
If significant trauma caused the wound, the rest of the limb should be evaluated as well.
Tiny dogs can hide a surprising amount of injury beneath a very small body.
Pain Control Changes the First Hours
Pico has likely spent an unknown period protecting the paw.
His muscles remain tense.
His body is tired.
Appropriate pain relief can help him settle enough for examination and treatment.
But becoming more comfortable does not mean the paw should immediately be used.
Pain reduction and tissue healing happen on different timelines.
The Carrier Becomes His First Safe Place
Pico does not rush through the open door.
He remains tucked into the towel.
That is fine.
After being moved from the parking lot and transported somewhere unfamiliar, the small enclosed space may be easier for him to manage than another immediate transition.
More importantly, staying still protects the injured limb.
Pico does not need to walk anywhere unnecessarily.
Then He Starts Falling Asleep
His eyes narrow.
His head lowers.
His breathing becomes slower.
The healthy front leg relaxes.
One hind paw slides out from beneath him.
But the injured limb stays exactly where it was.
Pico's muscles are relaxing around the injury.
Not at it.
The Paw Never Reaches the Towel
His head eventually rests completely.
His body becomes limp with fatigue.
Yet there is still a small space between the swollen foot and the fabric.
Even asleep, Pico maintains it.