When did roger payne discover that whales sing?

What to do about your black labs face swelling? What jumps when it walk and sits when it stand? Are all wolves in danger? What temruture do chinchillas need to be kept at? How many times a year can you breed your rabbit? What position are dwarf hamsters in when they die? What is the genius name for killer whales? What is the plural noun of swine? What does a neutered cat look like? What do chimp mothers teach their young? What do you do if female rabbit keeps letting her babys die? Is steven tyler's dog white? What kind of camels live in Egypt? What are baby shrews called? What causes rotorvirus in dogs? What do you call a intact female caprine? What is the spur of an otter? What type of identification do you need for a four-year-old and a two-year-old when traveling to the U.S.? A female rabbit had five offspring in one litter Two of the five baby rabbits were able to survive into adulthood Why are some animals more likely to survive to adulthood than other animals? What happens when a guinea pig is deprest?