Aalborg Zoo in Denmark made headlines last week with a public appeal for live but unwanted pets — including chickens, guinea pigs, rabbits and even horses — to be donated as food for its predators.

The zoo says these animals are “gently euthanised” and then used to feed species like tigers, lions, and lynxes as part of its efforts to recreate a naturalistic diet for carnivores.

“When keeping carnivores, it is necessary to provide them with meat, preferably with fur, bones etc to give them as natural a diet as possible,” said Pia Nielsen, the zoo’s deputy director.
“The livestock we receive as donations are chickens, rabbits, guinea pigs, and horses.”

The story has triggered intense debate. On the surface, it might seem like a sustainable, practical solution to both food sourcing and pet overpopulation. But at the heart of this controversy lies a deeper issue: the ethics of pet ownership — and how poorly prepared many people are to care for the animals they buy.

Not “Starter Pets” — Exotic Ones

Small animals such as rabbits, ferrets and guinea pigs are often treated as entry-level pets, bought cheaply and casually, often for children. But these small mammals are, in fact, classed as exotics- and that carries clinical consequences, particularly when it comes to their medical care.

Owners are often shocked by the cost of treatment or the lack of access to suitable veterinary services. Because of this, many don’t insure their pets or delay vet visits, especially when something subtle like digestive slowdown or internal pain appears, or even when there is an unexpected pregnancy.

This is where ultrasound- and the right ultrasound equipment- becomes critical.

Why Cheap Scanners Don’t Work on Exotic Pets

At PUM, we routinely speak with breeders and even under-equipped practices who purchase low-end ultrasound systems online, thinking a basic scanner will suffice for rabbits or guinea pigs.

A £1,000 machine on Amazon may look like a tempting bargain that could do the job, but for small exotics, this is not only ineffective, it’s potentially dangerous if poor imaging leads to misdiagnosis or missed pathology. These animals require high-frequency, high-resolution transducers, capable of clearly imaging tiny organs in a shallow field. With a cheap scanner, you might not see anything at all- or worse, you’ll see something inaccurate.

Above: a ferret receiving a heart scan from one of PUM’s sonographers in a veterinary clinic. Although this beloved pet was uninsured, the owner was luckily able to pay for the necessary care.

This gap between the animal’s needs and the owner’s understanding is part of the wider ethical issue. Too many people purchase animals without the infrastructure, knowledge or budget to care for them properly- medically, financially or emotionally. When things go wrong, rehoming or abandonment often follows. That’s why stories like Aalborg Zoo’s hit a nerve. They don’t just raise questions about predator diets, they shine a light on our uncomfortable relationship with pet ownership.

Animals are bought impulsively, treated casually, under-cared for, and then surrendered, often when they need help the most. Whether they end up at a rescue, in a skip, or as meat for zoo carnivores, the root problem is the same: a lack of long-term responsibility.

What Do You Think?

Is the zoo’s donation scheme a necessary reality of animal care, or a reflection of a broken pet culture?

We want to hear from you. Share your views in the comments or drop us a message, and as always CONTACT US if you need advice on suitable ultrasound systems.