This Week in Pet Health

07/16/2026

The deadly tapeworm spreading across America has reached the Pacific Northwest

A serious parasite called Echinococcus multilocularis, which can cause a dangerous disease similar to cancer, has been found in wild animals for the first time in the Pacific Northwest. Scientists tested coyotes near Puget Sound and found that 37% were carrying this tapeworm. This discovery is important for pet owners, wildlife workers, and vets because it raises the risk of exposure to pets and people in the area. Make sure to keep your pets away from wild animals and consult your vet about parasite prevention.

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A potentially dangerous tapeworm linked to severe, cancer-like disease has now been found in the Pacific Northwest, marking its first detection in wild animals along the U.S. West Coast. Researchers discovered the parasite, Echinococcus multilocularis, in 37% of coyotes tested around Puget Sound—a...

07/08/2026

More trees can mean fewer birds, new study reveals

Planting trees near farmland to block the wind might seem like a win for wildlife, but new research from Japan tells a different story. While some bird species benefit from these tree barriers, grassland and wetland birds that need open space dramatically decline—by more than 70% near these shelterbelts. For those caring for birds or managing habitats, this highlights the importance of balancing tree planting with preserving open areas to support diverse bird populations.

Read more about this unexpected finding.

Trees planted to protect farmland from wind may not be the biodiversity boost many assume. In Japan’s wetland farming landscapes, shelterbelts benefited some birds but sharply reduced grassland and wetland species that need open space. Researchers found grassland bird abundance dropped by more tha...

07/08/2026

Scientists open a million-year-old time capsule hidden beneath New Zealand

Scientists have uncovered an incredible fossil cache in a New Zealand cave, revealing a lost ecosystem from about a million years ago. Among the finds is a possible flying ancestor of the kākāpō, the rare flightless parrot beloved today. This discovery shows how natural events like volcanoes and climate changes were shaping and reshaping wildlife long before humans arrived.

For those caring for pets and wildlife, it’s a reminder of the long history of environmental change that continues to impact animal species. Read more about this ancient time capsule:

A cave in New Zealand has yielded fossils from a lost ecosystem that existed about 1 million years ago, including a possible flying ancestor of the kākāpō. The discovery reveals that volcanoes and climate upheaval were reshaping the country’s wildlife and driving extinctions long before humans ...

07/06/2026

Ticks may be tiny, but the risks they pose to your dogs and cats are big—and a new study from mainland China highlights just how widespread these threats are. Researchers surveyed ticks from over 2,000 pets across 27 provinces, identifying 16 species that carry pathogens such as Babesia, Ehrlichia, and Lyme disease. These findings remind us that tick-borne diseases are a year-round concern, requiring regular prevention and vigilance. Knowing which ticks and diseases are common in your area can help keep your furry companions safe and healthy.

Learn more about protecting your pets here: https://doi.org/10.1016/j.vetpar.2026.110802

07/04/2026

Yellowstone wolves may not have reshaped the national park after all

The story of how Yellowstone’s wolves changed the park’s ecosystem has been a favorite for years. But new research suggests the impact of wolf recovery may not be as dramatic as once thought. Scientists reexamined the data and found the earlier study used flawed methods that overstated the wolves’ influence on willow growth. Instead of a huge park-wide effect, the changes seem smaller and more localized.

For anyone caring for animals or interested in wildlife health, this reminds us how complex ecosystems really are. Read more here:

One of the most celebrated claims about Yellowstone’s wolves is facing a major challenge. Scientists say the study behind the famous trophic cascade story relied on flawed methods that overstated the ecological impact of wolf recovery. Their reanalysis found no evidence for a dramatic, park-wide s...

06/09/2026

This prehistoric fish may explain how animals first walked on Earth

A new study of a 380-million-year-old fish relative shows how early animals may have started moving from water to land. Scientists used advanced imaging to examine its skull and found features suggesting it could gulp air and track day-night cycles. These adaptations could have been key steps in how animals first began walking on land. For those who care for pets and animals, understanding this deep history helps us appreciate the incredible journey of life that ultimately led to the companions we love today.

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Scientists have peered inside the skull of a 380-million-year-old Antarctic fish that was closely related to the first animals to walk on land, revealing surprising clues about how life began its move out of the water. Using advanced neutron imaging, researchers discovered that Koharalepis jarviki h...

06/09/2026

Scientists solve 320-million-year mystery of reptile bone armor

A new study reveals that reptiles developed their unique skin armor independently in various species, rather than inheriting it from a common ancestor. Interestingly, Australian goannas lost their armor millions of years ago and then evolved it back. This research sheds light on the amazing adaptability and evolution of reptiles, which could deepen our understanding of their biology and health. For those caring for reptiles or simply fascinated by their evolution, this discovery highlights just how dynamic these creatures truly are. Read more:

Reptiles have been growing armor in their skin on and off for hundreds of millions of years, but scientists never fully understood how it evolved. A massive new evolutionary study shows these skin bones appeared independently in multiple lizard groups rather than coming from a single armored ancesto...

06/09/2026

Scientists say house cats could help unlock new cancer treatments for humans

A new study analyzing nearly 500 cat tumors has revealed surprising genetic links between cancers in cats, dogs, and humans. These shared cancer-driving genes, especially those associated with aggressive breast cancers, could lead to breakthroughs in how we understand and treat cancer across species. This research highlights the important role our pets play not just in our lives but in advancing medical science. For everyone who cares for pets, this could mean better health outcomes for both animals and people in the future.

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Scientists have cracked open the “black box” of feline cancer in a landmark study that genetically analyzed nearly 500 cat tumors from around the world. The research uncovered striking similarities between cancers in cats, dogs, and humans — including shared cancer-driving genes tied to aggres...

06/09/2026

Deadly fungus and lung parasites are hammering wild rattlesnakes

A new study reveals a serious health crisis for wild rattlesnakes in the southeastern US. Many snakes, especially pygmy rattlesnakes, are battling multiple infections at once. Snake fungal disease, a deadly fungal infection, is widespread and particularly harmful, often appearing alongside a lung parasite known as snake lungworm. This combination can weaken snakes and impact their role in local ecosystems. For those who care for wildlife or work in animal health, monitoring and protecting these animals is crucial. Read more:

A sweeping new study of wild snakes in the southeastern US has revealed a hidden health crisis slithering beneath the surface. Researchers found that many snakes are carrying multiple infections at once, with a dangerous fungal disease called ophidiomycosis — or snake fungal disease — emerging a...

06/01/2026

This prehistoric fish may explain how animals first walked on Earth

Researchers have uncovered fascinating details about a 380-million-year-old fish that offers clues about how animals first moved from water to land. This prehistoric fish, Koharalepis jarviki, had unique skull features that might have helped it gulp air and respond to day-night changes, adaptations important for life near the water’s edge.

Understanding these early developments helps us appreciate the long journey of animal movement and adaptation—information that enriches our knowledge about the creatures we care for today. Read more:

Scientists have peered inside the skull of a 380-million-year-old Antarctic fish that was closely related to the first animals to walk on land, revealing surprising clues about how life began its move out of the water. Using advanced neutron imaging, researchers discovered that Koharalepis jarviki h...