It’s a long-held belief that loud mouths overcompensate for something, but in the case of howler monkeys, science has confirmed it’s a biological fact. A landmark study by Dr. Jacob Dunn at Cambridge ...

Quick Take The “big truck, small man” phenomenon is also seen in the animal kingdom. The loudest howler monkeys were found to ...

They found that bathing in hot springs subtly reshapes the snow monkeys’ relationships with their parasites and gut microbes. The macaques that bathe showed different lice distributions and gut ...