That's the preliminary report from the annual medical examination on the anaconda, the world's largest snake species.
The examination at the New England Aquarium is part of care for animals whose health may be difficult to assess while they are on exhibit.
Aquarium officials say having an opportunity to examine them behind the scenes ensures that the animals are healthy and thriving in their exhibit.
Associate veterinarian Dr. Melissa Joblon sedated Wilson in an exhibit she shares with another female anaconda.
The sedative reduces stress on the animal and provides a measure of safety to those conducting the medical exam because the snakes, while they are not aggressive, are still very strong.
The anaconda was then transferred to a medical examination room where a series of tests and checkups began.
That includes an eye examination, a look inside the snake's mouth, a blood draw, collection of a stool sample and a close inspection of its body.
An ultrasound examination of the internal organs had the potential to produce the most dramatic results because anacondas have the ability to get pregnant through a nonsexual reproduction process known as parthogenesis – which translated from its Greek word origins means virgin birth.
Two years ago, an adult anaconda who had never been exposed to a male gave birth to two babies at the New England Aquarium.
But an examination of Wilson's reproductive system showed that she is not pregnant.
Aquarium officials say their animal health department – comprising of three veterinarians, three biologists and numerous aquarists – is responsible for the care of some more than 15,000 animals living there, many of whom receive an annual physical exam.
