In a surprising finding, researchers have discovered that even though primates are "smarter" than mice, the rodents actually have more synapses per neuron.

Researchers are testing an antibody shot to protect people from Lyme disease-causing bacteria.

Studying mice shows that evolution often works on the same genes in different populations when they're confronted with similar environmental conditions.

Medical research to benefit people is first conducted in animals. Creating a new biomedical model by inserting human immune cells into pigs may lead to new insights and treatments.

Fungi are a small but important part of the gut microbiome. A new study in mice shows that how much weight mice gain on a processed food diet depends on this fungal microbiome.

Scientists are experimenting with using dogs to sniff out people infected with COVID-19. But dogs aren't the only animals with a nose for disease.

Animals that regularly dine on toxic food may hold clues for designing new drugs to treat persistent pain in humans.

Framing cats as responsible for declines in biodiversity is based on faulty scientific logic and fails to account for the real culprit – human activity.

Researchers are developing a seasonal shot that blocks Lyme disease-causing bacteria from a tick.