To understand why kangaroos hop -- a rarity among animals -- researchers have studied the musky rat-kangaroo (Hypsiprymnodon moschatus), a diminutive marsupial that weighs only 500 grams but is the ...

Pet rats are super intelligent and social animals that really thrive when you give them plenty of mental stimulation and ...

On the East Coast, especially in major cities, rats are seen as a nuisance. On the West Coast in Portland, they receive ...