Possible Clues:

• Word before drome
• ''Hungry'' board game beast
• Large semi-aquatic pachyderm (abbr)
• River giant, for short
• Fashionable Post Office, one found by river naturally
• Massive mammal of Africa
• Short-legged African beast, informally
• Thick-skinned herbivorous animal of tropical Africa (abbr)
• Creature with the strongest bite of all land animals
• Wallower