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.
My Min Pin howls at all sirens when they get within a block or two. I don't see anything wrong with it, and I let her howl until she's done. However, if you want to train them not to howl, the trick is to bribe them with treats. If the dog is eating a chicken strip, the dog can't howl.ost 7. if me and my boyfriend start to make howling noises both our dogs small and big start to howl! it's the cutest thing when they do it together. or when my boyfriend plays the piano the little one howls. and they both howl at sirens. its pretty cute actually. i hope i'ts not hurting them.