Amanda Bynes — Scrambled to Save Gasoline-Soaked Dog After Driveway Fire

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Amanda Bynes accidentally drenched her pet Pomeranian with gasoline while building a fire in a residential neighborhood … then raced to a nearby liquor store to clean the pooch … and our sources has the bizarre footage.

The surveillance video — taken inside the liquor store — begins minutes after Bynes allegedly used a canister of gasoline to fuel a fire outside a random elderly woman”s home in Thousand Oaks, CA around 8:38 PM on Monday night.

At 8:39 PM … Bynes can be seen bursting into the liquor store and darting straight for a restricted  “employees only” area — while holding the dog in her outstretched arms.

The cashier — sensing something was wrong — rushed out from behind the register and chased after Bynes to see what she was doing.

our sources spoke to the owner of the store who tells us … the cashier detected a strong odor of gasoline and observed Bynes attempting to rinse off the dog in a sink in the back area.

We”re told … as soon as the cashier confronted Bynes, she “freaked out” and left the store without further incident.

Moments later, cops located Amanda and placed her on a 5150 psychiatric hold believing she could pose a danger to herself and/or others.

As for the dog, it”s current whereabouts are unknown … but we”re trying to track it down.