What is the difference between bats and kangaroos?

Although whales and kangaroos are both mammals, there are numerous differences between them.

• Whales live in the sea and kangaroos live on land
• Kangaroos are marsupials and have pouches, while whales are placental mammals and do not have pouches
• Kangaroos can only be found in Australia (and tree kangaroos are also found in New Guinea) but whales are common in many countries and international waters, like the Southern Ocean
• Female kangaroos, like other marsupials, have two vaginas, or what are called paired lateral vaginae. These are for the purpose of transporting the sperm to the womb, but there is a midline pseudovaginal canal for actually giving birth. As well as two vaginas and two uteruses, female marsupials have two fallopian tubes and two cervixes. Whales do not.
• Kangaroos have four limbs and a tail. Whales have fins and a tail.
• Kangaroos have fur, but whales have skin.