Olivia works tirelessly at DoveLewis Veterinary Emergency and Specialty Hospital in Portland.

She’s got golden locks, big brown eyes and a tail.

Olivia, a Labrador retriever, is a therapy dog and lifesaving blood donor for the nonprofit, who recently saved the life of Jaxon, a 5-month-old puppy, who was rushed to the hospital facing life-threatening symptoms caused by rodenticide poisoning, according to a press release.

DoveLewis is celebrating Olivia, and other superheroes alike, in honor of National Superhero Day on Monday, April 28.

“Every blood donation is vital, but in emergencies like Jaxon’s, it’s the difference between life and death,” DoveLewis Blood Bank Director Kelsey Reinauer, CVT, said in a news release. “Thanks to Olivia, we were able to save Jaxon’s life, and she serves as a perfect reminder of how important blood donations are to critically ill pets.”

Jaxon arrived at DoveLewis with signs of lethargy, pale gums and abnormal bleeding. Staff quickly diagnosed him with coagulopathy — a condition that prevents proper blood clotting, like anemia — likely caused by the poisoning.

Rodenticide poisoning can be caused by ingesting poisons intended for rodents, or by consuming a rodent that ate the poison itself. This type of poisoning can cause uncontrolled bleeding and lead to death, according to the National Institutes of Health.

Jaxon’s condition grew critical, leading staff to believe one thing needed to happen, and it needed to happen quickly: a blood transfusion.

Olivia has just shown up at DoveLewis for her routine donation. The timing was serendipitous.

Her blood type was a match for Jaxon. As soon as she finished donating, the blood was rushed to Jaxon. His vitals began to stabilize, his anemia improved, his clotting levels normalized “and the playful puppy spark” returned.

“Blood donations are easy and fun for Olivia,” Grace Epstein, Olivia’s owner, said in a news release. “The need for blood products to help sick and injured dogs and cats is very real. Healthy dogs like Olivia regularly donate so that patients at DoveLewis can recover and return to their families happy and healthy.”

This marks Olivia’s 16th time giving blood to save animals in need.

DoveLewis relies on a dedicated team of volunteer blood donors — both dogs and cats — to provide the needed blood products for its patients. It is the only nonprofit, 24/7 emergency and intensive care unit in the region, and was established in 1973.

“We call our blood donors ‘superheroes’ because their willingness to help makes lifesaving differences for so many animals,” Reinauer said in the release. “Olivia is a wonderful example of that commitment.”

For those interested in learning more about your dog becoming a blood donor or contributing to DoveLewis’ lifesaving mission, visit dovelewis.org/blood-donors.