The pygmy marmoset, often called the “finger monkey,” is the smallest monkey in the world. It lives in the rainforests of the Amazon Basin in South America, where it spends most of its time high in the trees. These tiny primates are excellent climbers and move quickly through branches using their sharp claws and strong grip.

Their diet mainly includes insects, fruits, and tree sap. One of their unique abilities is using their sharp lower teeth to chew small holes in tree bark so sap can flow out. They then return to these holes to drink the sweet sap throughout the day.

Despite their tiny size, pygmy marmosets are very social animals and live in small family groups. An adult pygmy marmoset usually weighs around 100 grams (about 3.5 ounces), which makes it small enough to sit comfortably on a human finger.

Lawmakers in Kentucky have passed a law requiring drunk drivers who kill a parent or guardian to pay child support to the victim’s surviving children. The measure — sometimes referred to as “Bentley’s Law” — is designed to ensure children who lose a parent due to impaired driving receive financial support from the person responsible. Courts will determine payment amounts based on the child’s needs and the offender’s financial circumstances, with obligations continuing until the child reaches adulthood.

Supporters say the law adds accountability and helps protect children from long-term financial hardship following a tragic loss.

Can we be adults here?!?

Punch, the viral macaque at Ichikawa City Zoo, has surpassed 40 million views, drawing record crowds of over 5,000 visitors in a day. To reduce stress, the zoo added restricted zones and stronger barriers around his enclosure.

While he still clings to his IKEA plushie for comfort, his social life is mixed—recently handled roughly by a mother monkey but supported by an adult named Onsing. Meanwhile, rights groups say his fame highlights concerns about primates in captivity.

A math teacher found an unexpected platform for his lessons
Zhang Xudong says uploading calculus videos to adult sites earns him over $27,000 a year.

Blending equations with unconventional marketing
He turned viral curiosity into steady income — proving even calculus can break the internet