Researchers warn that the Asian edible fungus 'citronmussling' may spread in Swedish forests and outcompete native species.

A Bozeman hunter’s bird dog in eastern Montana was found with an Ixodes scapularis tick, raising concerns that Lyme disease–carrying ticks might be establishing themselves in the region.

February fishing and a catch of an introducted species in DeLong Lake.

A recent survey in Prince William Sound identified three new non-native species, including the newly discovered Monocorophium acherusicum, which may spread due to its adaptability to local conditions, prompting recommendations for ongoing monitoring and prevention efforts.

A bat sighting was reported in the hills of Reykjavík, Iceland, prompting a police response, but the bat had already flown away upon their arrival.

A photographer captured Brant geese appearing early on Vancouver Island, suggesting a shift in their wintering patterns.

A rare sighting of a cougar was reported in Vancouver's urban Dunbar area, close to Pacific Spirit Regional Park, prompting caution among residents.

A juvenile mammoth was found in Siberian permafrost, remarkably preserved for over 50,000 years, near Batagaika crater.

During the Christmas bird count in Bethel, despite high winds, volunteers spotted two bald eagles and a red-breasted nuthatch, marking the first sighting of the nuthatch in 21 years of the event.

A 23-year-old male orca named Noah made a surprising visit to Victoria's Inner Harbour on December 14, causing excitement among locals.

A polar bear wandered into the village of Uelen in Chukotka, Russia, causing alarm among residents who quickly took shelter. Bear patrol workers were able to safely drive the bear away without incident. Local residents note that polar bears have visited more often this year than last year. Taking this case into account, patrol volunteers have chased away the polar predators 6 times.

A humpback whale has been spotted in the Shannon Estuary for the first time, prompting authorities to ask ships to reduce speed to prevent potential collisions. The Irish Whale and Dolphin Group is monitoring the whale's unprecedented presence.

Two endangered North Atlantic right whales were found entangled in fishing gear off the coast of Massachusetts, posing a potentially fatal threat to one juvenile whale.