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.
Dogs sometimes howl when theyâre hurt or sick. If your dog starts howling or howls more than usual, take him to a veterinarian to rule out illness and injury before doing anything else. What to Do About Excessive Howling. Howling in Responds to Sounds If your dog howls in response to some kind of trigger, like another dog howling or a nearby siren, heâll probably stop when the sound stops.