For example, right before females ovulate — when estrogen reaches its peak — they tend to be more physically active. The ...

Researchers are gaining a new appreciation for the genes on the X and Y chromosomes and how they shape sex differences in ...

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Hamsters are super cute, round, and fluffy pets. That is, unless they are flat. Have you noticed that hamsters seem to deflate when they are resting or asleep? Take a look at this Instagram post, ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. A California woman was shocked to discover that her hamster has been ...

A new study found that microgravity simulated on Earth hindered sperm cell movement, egg fertilization and embryo development ‪—‬ findings that have serious implications for the future of space ...

A hamster is often considered the perfect starter pet: small, cute, and seemingly uncomplicated. But appearances can be deceiving—hamsters also have high demands for care and maintenance. Anyone ...

WATFORD CITY, N.D. — “Mom, uh, I need your help,” a little voice chirped from the living room. I was sitting at my computer at the corner of the kitchen counter, my perch and work desk for when one of ...

Add Yahoo as a preferred source to see more of our stories on Google. How long do hamsters live? A seemingly simple question—with many facets. Photo: Getty Images Many people know how old dogs and ...

Many people know how old dogs and cats can get. But when it comes to the life expectancy of other animals, some might need to think a bit longer. It’s similar with the age of hamsters, or do you know ...

Q: How do we find a nice hamster for our daughter? A friend of hers has a hamster that bites, and we don't want that. Also, do hamsters need vaccinations? A: Veterinarians often refer to hamsters, ...

There are two main species of hamsters kept as pets: Syrian (Golden) hamsters and Siberian (Dwarf) hamsters. Syrian hamsters are solitary by nature. You shouldn’t put them together after they reach 10 ...