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Bulldozer, a nine-day-old reticulated giraffe, unexpectedly puts his head on Gail Hedberg, a veterinary technician, at the Zoo Hospital at San Francisco Zoo Monday, in a photo released by the zoo. Bulldozer, who is six feet tall, was born to a first-time, three-year-old mother named Bititi. The baby giraffe is being given round-the-clock care by the zoo's animal care and veterinary staff, as his mother did not display the required maternal care.