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AP Photo By SUE MANNING Associated Press Writer LOS ANGELES (AP) The Guinness Book of World Records officially says an ailing 4-year-old Great Dane named Titan from San Diego is the world's tallest dog.

Owner Diana Taylor says Titan is blind, deaf, epileptic and undergoes acupuncture and chiropractic adjustments every three weeks.

He is also a gentle soul who is often mistaken by young children as a horse.

The announcement came during a ceremony Thursday.

Taylor says Titan stands 42.25 inches from floor to shoulder, weighs 190 pounds and doesn't stand on his hind legs because it isn't good for him.

Titan took over the title from Gibson, a 7-year-old harlequin Great Dane from Grass Valley who died earlier this year after battling bone cancer.

(Copyright 2009 by The Associated Press. All Rights Reserved.) APNP 11-12-09 1747CST | save this article / add to your favorites list