Possible Clues:

• Tallest beast
• Extremely tall animal
• One with a great view at the zoo?
• Terrible grief accommodating a loud one with a lot of neck
• Animal once known as a camelopard
• Animal whose food is superior to other animals
• It's spotted in Africa
• World ___ Day (June 21 celebration of the animal pictured in this grid)
• The neck of the woods
• Okapi cousin