The dog blog

Scientists have captured a never-before-seen, high-resolution look at influenza’s stealthy invasion of human cells, revealing that the cells aren’t just helpless victims. Using a groundbreaking imaging technique, researchers discovered that our cells actually reach out and “grab” the virus as it searches for the perfect entry point, surfing along the membrane.

Researchers studying thousands of canine genomes discovered that wolf DNA is still present in most dog breeds. This ancient genetic influence shows up in traits like body size, behavior, and environmental resilience. Even dogs bred far from wolves, including tiny chihuahuas, carry detectable wolf ancestry. The findings highlight how deeply intertwined the histories of dogs and wolves really are.

Data from over 47,000 dogs reveal that CBD is most often used in older pets with chronic health issues. Long-term CBD use was linked to reduced aggression, though other anxious behaviors didn’t improve. The trend was strongest among dogs whose owners lived in cannabis-friendly states.

Beneath the ocean’s surface, bacteria have evolved specialized enzymes that can digest PET plastic, the material used in bottles and clothes. Researchers at KAUST discovered that a unique molecular signature distinguishes enzymes capable of efficiently breaking down plastic. Found in nearly 80% of ocean samples, these PETase variants show nature’s growing adaptation to human pollution.

On the Canary Islands, scientists discovered that the spider Dysdera tilosensis has halved its genome size in just a few million years—defying traditional evolutionary theories that predict larger, more repetitive genomes in island species. This unexpected downsizing, revealed through advanced genomic sequencing, shows that despite its smaller DNA, the island spider is genetically more diverse than its continental relatives.