The other situation is if mom has O type blood. The same thing can happen as with the (-) and (+) blood type difference, but it is not as severe. If mom has O+ or O- blood type, and the baby has A+, A-, B+, B-, AB-, or AB- blood type, an ABO incompatibility can develop.
Why do howler monkeys howl? Howler monkeys live in family groups in the rain forests of South America. They howl so that other monkey groups do not stray into their territories. The sound also helps group members stay in contact with each other. Monkeys are communal animals that live in exclusive groups.
1 The Howler Monkey is a large type of New World Monkey. 2  There name comes from the fact that they are louder than any other types of Monkeys. 3  Japanese Macaque. 4  The Japanese Macaque is also called the Snow Monkey. There are more than 260 species of Monkeys found in the world today. 2  They are derived from early primates that have been around for millions of years. 3  There isnât enough information about evolution to say with certainty how they came to be. 4  Baboon.