Grant the Shih-Tzu, rescued by Oakland's RBARI, succumbed to severe medical complications, the hospital announced that day.
"The short time that he was under our care, Grant won the hearts of our staff with his sweet and trusting nature," the hospital said on its Facebook page.
"Our staff and the staff of RBARI showered him with love and care but sadly that wasn't enough to save him.
"Today our halls are filled with sadness."
A GoFundMe Page had raised $18,000 as of Friday evening, surpassing the goal by more than $8,000.
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