Related Clues:

• Land animal whose closest living relative is the whale
• Thick-skinned type taking fruit by Italian river
• Animal that can devour a watermelon in one bite
• Fashionable Post Office, one found by river naturally
• Massive mammal of Africa
• Cool, running water, for mud-lover
• African beast usually larger than a rhino
• Animal that dances ballet in "Fantasia"
• Big animal with a big yawn
• Joint work brought back large animal
• Animal similar in size to a rhino
• Wild beast from India very quietly smuggled into house
• Bather in river
• Aggressive ungulate
• Thick-skinned creature taking fruit on European river