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May 20, 2025

Poisonous Foods for Possums: A Complete Guide

Understanding what foods are poisonous to possums is crucial for ensuring their health and well-being. Possums, being omnivorous creatures, can consume a wide variety of foods, but certain items can be harmful or even fatal. While they thrive on a diet rich in natural elements like fruits, seeds, and insects, certain everyday foods can disrupt their system or cause severe health issues.

Close-up of a vivid red fly agaric mushroom surrounded by autumn foliage.

Food TypeToxicity Reason
Citrus FruitsHigh citric acid content can upset digestion
AlcoholEthanol adversely affects nervous system and organs
ChocolateContains theobromine harmful to the heart and nervous system
Onions and GarlicThiosulphate destroys red blood cells, leading to anemia
Dairy ProductsPossums may have lactose intolerance due to insufficient lactase
AvocadosPersin toxin causes diarrhea and vomiting

Citrus Fruits and Possum Digestion

Citrus fruits such as grapefruits, limes, oranges, and lemons might be refreshing for us, but they spell trouble for possums. The high levels of citric acid in these fruits can upset the delicate balance in a possum's digestive system. While they can munch on various fruits with delight, these juicy options should be kept off their menu to avoid any unpleasant digestive disturbances.

Gelsemium sempervirens. Carolina Jasmine. Nectar is poisinous to honeybees. Entire plant contains strychnine-related alkaloids (1927)
"Gelsemium sempervirens. Carolina Jasmine. Nectar is poisinous to honeybees. Entire plant contains strychnine-related alkaloids (1927)" by Swallowtail Garden Seeds is licensed under CC BY 2.0. .

Alcohol: More Harm than Fun

Alcohol and possums? That's a definite no-go. The ethanol found in alcoholic beverages isn't just a party pooper for possums—it's downright dangerous. It can wreak havoc on their central nervous system and wield a toxic strike against their organs. Just as alcohol impacts humans, but on an even more severe scale, it should never be considered safe for our furry backyard visitors.

what foods are poisonous to possums

Chocolate: A Sweet but Deadly Temptation

We might crave chocolate in stressful times, but for possums, it's not the feel-good treat it is for us. Theobromine, the compound that makes chocolate dangerous to many animals, poses a significant risk. Especially in darker varieties, it can lead to heart complications, nervous system issues, and more. The message here: keep the cocoa treats away from possums.

infographics-toxic-foods-for-dogs
"infographics-toxic-foods-for-dogs" by WestchesterAnimalHospital is licensed under CC BY-SA 2.0. .

Onions and Garlic: More than a Breath Problem

While onions and garlic add flavor to our dishes, for possums, they bring risks of anemia. These staples contain thiosulphate, which can destroy red blood cells in possums, resulting in anemia. It's a classic case of one critter’s culinary delight being another’s dietary risk—let's keep these pungent bulbs out of a possum's reach.

High-angle view of fresh, juicy cherry tomatoes with vibrant green stems, creating a natural pattern.

Rethinking Dairy

Does lactose intolerance ring a bell? Just like some humans, many possums lack the enzyme lactase needed to digest dairy products. Even seemingly innocuous treats like cheese can lead to digestive discomfort and diarrhea. To ensure their stomachs remain in balance, avoid offering them anything creamy or cheesy.

Avocado: A Not-So-Healthy Choice

Despite its superfood status for humans, avocado is not so fabulous for possums. The toxin persin, prevalent in avocados, can lead to diarrhea and vomiting in possums. So, while you might relish some guacamole, it's better if possums skip the avocado toast entirely.

Processed and Junk Foods: A Nutritional Minefield

Possums, with their affinity for foraging, might come across various human foods, but not all are safe. Processed foods, high in sugars, salts, and fats, can lead to obesity, dental issues, and nutritional imbalances. Moreover, salty treats can burden their kidneys, leading to severe health crises. So, whether it's chips, ice cream, or sodas, these should definitely be off-limits to maintain their well-being.

As we continue to share our environments with wildlife like possums, it's essential to ensure their health by making informed choices about their diet. Have you ever encountered possums in your neighborhood? Share your experiences or ask questions in the comments below—let's get a conversation going! For more recent articles and insights, check out our blog.

What foods are bad for possums to eat?

Possums may nibble on many garden plants, yet some can cause digestive trouble or be harmful. The following foods and plants are best kept out of reach:
• Newly sprouted seedlings, which are tender but offer little nutritional benefit
• Parsley and coriander, as these herbs can upset their stomach
• Brassicas (cauliflower, cabbage, broccoli, kale), which may lead to digestive discomfort
• Tomatoes (especially unripe), because they can contain compounds unsafe for possums
• Leafy greens in large amounts, since they may overwhelm a possum’s system
• Chards (beets, silverbeet, Swiss chard), which are harder for them to process
• Peas, which can cause digestive issues if given in excess

What food poisons possums?

Certain items can be toxic or dangerous for possums, so it’s crucial to avoid feeding them:
• Almonds and other nuts in large quantities, as they can disrupt possum digestion
• Cheese, onions, and dairy products, which often result in digestive distress
• Green potatoes, containing solanine—a naturally occurring toxin
• Junk food, due to its high fat and salt content
• Excessive amounts of canned cat food, chicken, eggs, kitten or dog chow, which can create nutritional imbalances
• Human baby cereals or processed foods, lacking the nutrients possums need

What usually kills possums?

Although possums are resilient, lethal measures still occur. In some areas where it’s legal, firearms such as a .22-caliber rifle or a shotgun loaded with No. 6 shot can be used at night. Opossums often pause when caught in a light beam, giving hunters a clear shot. Before considering lethal control, check local laws and explore humane alternatives.

What poison gets rid of possums?

Rather than resorting to poison, effective long-term strategies focus on deterring possums from your property:
1. Remove food and water sources that attract them.
2. Secure or block outside entry points, like chimneys, vents, and gaps.
3. Apply chemical or natural repellents in the garden to discourage possums from settling.
4. Use electronic deterrents, such as motion-activated lights or noise devices, to scare them away.

Taking care of our curious possum friends starts with knowing what’s safe for them to nibble on. Just like us, possums need a balanced diet, and while they’re capable of eating almost anything, staying informed about the specifics of their dietary needs can literally be a lifesaver. Whether it's avoiding toxic foods like avocado skins and seeds or staying away from processed human snacks, every little step goes a long way in ensuring they stay happy and healthy. With possums often ending up as unexpected garden visitors, we can be proactive by learning and adjusting what we introduce to their natural habitats.

Staying Informed and Connected

If you're as fascinated by these nocturnal critters as I am, you'll want to keep learning all there is to know about them. Stay connected with me to dive deeper into these topics and much more by following on X (formerly Twitter). Sharing insights and stories is a great way to build a community of fellow possum enthusiasts and make sure we’re all doing our part in helping these unique animals thrive. And don't forget, staying informed isn't just about reading; it's also about sharing your experiences and insights with others who care. Looking forward to hearing your possum tales! 🐾

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Justin Ankus

Author
I’m Justin Ankus, an architectural designer, ceramicist, and digital media entrepreneur with a Bachelor of Architecture from the Illinois Institute of Technology. My architectural experience spans public-sector work, private residential design, independent commissions, international competitions, and conceptual projects exploring how buildings respond to their landscapes. My portfolio includes residential renovations and new-construction concepts, urban and cultural proposals, digital fabrication, and architectural studies developed for environments ranging from dense cities to the American desert. My current architectural work continues to explore sculptural forms, parametric design, contextual futurism, and the relationship between architecture, climate, material, and place. Across architecture, ceramics, publishing, and web development, my work combines spatial thinking, visual storytelling, digital automation, and hands-on making to transform ideas into tangible experiences across clay, digital media, and the built environment.
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