Experienced and professional animal trainer provide their insights in answering this question :
A. Although most of the seeds and grains humans eat are not poisonous to rabbits they are high-energy foods and not suitable for rabbits in large quantities. Remember rabbits are primarily leaf eaters not seed eaters.

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Our sources include academic articles, blog posts, and personal essays from experienced pet care professionals :

Fruit Seeds/Pits

Apples and pears are the most notorious examples, but the pits from apricots, peaches, plums, and mangos also contain cyanide, as do cherry pits. While the amount of cyanide contained in fruit seeds and pits is generally scant, it is best to avoid feeding them to rabbits altogether.

The answer is yes, but pumpkin seeds are high in fat and should be given more sparingly. If you`re interested in feeding pumpkin seeds to your dog, the daily recommended amount is one ground pumpkin seed per 10 pounds of body weight.
They can eat the leaves and flesh, but avoid giving them seeds, the stringy centre, or the tough rind. Introduce pumpkin slowly, with just a few mouthfuls and watch out for any changes in their health.
Degus, chinchillas, hedgehogs and guinea pigs should not be fed any pumpkin or pumpkin seeds at all.
Likewise buttercups, foxgloves, primrose, delphiniums/larkspur, columbine (aquilegia) hellebore, comfrey, poppy, periwinkle, monkshood, rhubarb, nightshade, ivy, privet, holly and yew are all reasonably common garden plants and all are toxic.
Others, like buckwheat seed, are good sources of certain essential amino acids (those that rabbits cannot synthesise from other nutrients) like lysine. Seeds can also be a source of certain phytonutrients that may be lacking in grasses, vegetables and fruit: again, hemp seed is a good example of this.
Pumpkin seeds are delicious, healthy, and nutritious edible seeds of a pumpkin that your pup can enjoy in many ways. They can be eaten raw, cooked, or roasted. They`re also a great way to increase your dog`s protein intake in his diet.
Pumpkin seeds are valued for pets as:

An excellent source of antioxidants, omega 3, protein, iron, calcium, magnesium, phosphorus, potassium, zinc, folic acid, and Vitamin A. Immune system support. An anti-parasite treatment (natural dewormer) for intestinal parasites like tapeworm.

Rabbits can eat fresh pumpkin in moderation/small amounts. Rats, mice and hamsters can eat both the pumpkin and the seeds in moderation, and can also be fed some squashes too.
Particularly good vegetables include the dark leafy greens like romaine lettuce, bok choy, mustard greens, carrot tops, cilantro, watercress, basil, kohlrabi, beet greens, broccoli greens, and cilantro.
Pumpkins are generally safe for animals to eat, according to Rau Animal Hospital. They contain nutrients like vitamins A, B, C and E, fiber and their seeds are packed full of protein. They do not contain anything inherently harmful to animals or people.
Pumpkins are not natural to the woodland and while some wildlife may enjoy a tasty snack it can make others, such as hedgehogs, very poorly. “Feeding pumpkins, or any other food in the forest, to birds, foxes, badgers, deer, and boar can make them unwell and can spread disease.
Can Rabbits Eat Cucumber? Yes, it is safe for rabbits to eat cucumber! Most rabbits will love the fresh taste. Rabbits can also eat cucumber leaves.
Foods to feed your rabbit as a treat

High in sugar, apples should only be fed to rabbits as a treat. Also high in sugar, it`s safe for rabbits to eat bananas occasionally. Rabbits have a sweet tooth, so grapes are great as a treat.

Myth #3 – Rabbits eat lettuce

Rabbits shouldn`t eat some lettuces (such as iceberg), as they contain lactucarium, which can be harmful in large quantities. Some lettuce is `worse` than others – light-coloured varieties are high in water and have very little nutritional value, so are not recommended.

Oats make a good treat for rabbits. Like everything else, they should be given in moderation. One teaspoon a day is plenty unless you have an underweight rabbit. Oats are low is sugar but higher in fat.
Do not give broccoli to rabbits. It will give them painful gas. Never give your rabbit kale or spinach. Kale and spinach can cause health problems over time, due to the high amount of oxalates and goitrogens.
After cleaning your fresh pumpkin seeds, soak them in a bowl of water with one tablespoon of salt overnight at room temperature. This process will help soften the seeds making them easier to digest.
Pumpkin seeds are covered in a thin membrane. The enzymes in the membrane are difficult to chew and digest, which is why you want to soak the seeds for 12-24 hours.
In most recent years, herbalists have found that pumpkin seeds are an effective agent in deworming for humans and dogs as well. What makes pumpkin seeds successful with deworming is the amino acid they contain called cucurbitin. Cucurbitin is what paralyzes and removes the worms from the digestive tract.
Pumpkin seeds can`t remove worms or parasites in the body

These compounds are responsible for giving pumpkin seeds a bitter taste and are a plant`s defense against being eaten by animals, according to Science Direct.

Pumpkin seeds may be beneficial for men with erectile dysfunction as the seeds have many properties that help with prostate function. They also reduce benign prostatic hyperplasia (BPH), a condition in which the prostate becomes enlarged without the presence of cancer and mostly occurs in men over 50.
Additionally, one of the benefits of pumpkin seeds is that they contain cucurbitin, an amino acid that acts as a natural de-worming agent by paralyzing tapeworms and other intestinal parasites.
Although potatoes won`t necessarily poison rabbits, this human-favorite vegetable isn`t ideal for them. Potatoes are high in carbohydrates and starch, both of which can cause issues for your bunny`s digestive system.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Q. re pumpkin seeds harmful to rabbits
ANSWER : A. Although most of the seeds and grains humans eat are not poisonous to rabbits they are high-energy foods and not suitable for rabbits in large quantities. Remember rabbits are primarily leaf eaters not seed eaters.

Q. What can a human get from a rabbit? What illness can a human get from a domesticated rabbit?
ANSWER : A. Actual diseases passed from rabbit to human is rare. the most common issues are allergies to rabbits and infection from a bite or scratch.
Wild rabbits may pass on salmonella but this is rare and even rarer in domestic rabbits. The only other thing is mites. some rabbits suffer from cheyletiella which can be transmitted to humans.

Q. have a male rabbit non neutered likes to run and spray urine everywhere have other male next to n separate cage cant see eachother still sprays why
ANSWER : A. This is normal territorial behavior. Neutering both rabbits will likely prevent this behavior. He may not see the other rabbit, but he can smell the other rabbit, so therefore is telling the other rabbit he is here and that the area is his kingdom.
Here is great information that should help you along: http://articles.extension.org/pages/33013/rabbit-behavioral-problems:-inappropriate-urination

Q. My rabbit gas diarea and the room where it lives is stinking bad,How can I cure my rabbit?
ANSWER : A. As long as the rabbit is otherwise bright, happy a d eating then it could just be due to an imbalance in gut flora. You can try Fibreplex paste (a pro biotic paste for rabbits). If there are any other symptoms such as lethargy, off food then you need to see your vet straight away as rabbits can go downhill very quickly in the matter of hours and it can be hard to bring them back when they get very poorly.

Q. We have 2 cats and got 2 rabbits yesterday. 1 rabbit died with probably E.Cuniculi. How at risk are our cats? What can we do?
ANSWER : A. This parasite is dangerous only for rabbits. Your cats are safe but the other rabbit can get the parasite. Disease is spreaded by urine and hay or litter contaminated with urine. Keep the rabbit in separate new cage with new litter. If you will notice any sign of infestation ( opthalmological or neurological) see a vet as soon as possible

Q. 5 Yr old female cat change in behavior last 2 mos: hides, sleeps all the time, meows when touched, decrease appetite; last 1-2 wks wobbley.
ANSWER : A. While I think neurologic disease is certainly a concern based on what you’re describing, and should be ruled out with a good neuro exam (full examination of spinal reflexes and cranial nerves), a cat that sleeps all the time and is wobbly could have many things going on. What you’re describing sounds like generalized weakness to me, and that could be caused by heart disease, liver disease, kidney disease, anemia (lots of causes to this) or metabolic/hormonal conditions like diabetes. Often cats “look” neurologic when in fact they’re just really weak.

However, as far as specific neurologic conditions that might cause what you’re seeing, chronic ear infections or a polyp in the inner or middle ear can affect the vestibular nerve and affect balance, some drugs if used long term (metronidazole) can cause it as well. Other things include intervertebral disk disease (slipped disk), cancer in the spinal cord, thiamine deficiency (not a problem if your cat eats a commercially-prepared diet) and feline infectious peritonitis.

Unfortunately the only way to start figuring out what’s going on is likely with lab work (complete blood count, chemistry panel, and urinalysis) and x-rays for starters (likely of the spine). And as I said above a good neuro exam is critical to starting to figure out whether it’s a neuro problem or not. Your vet will possibly recommend other tests based on the initial results. If you’d like to consult further about exactly what’s going on with your cat select the “consult” button.

Q. My dog is a lab. 12 years old and in great health. He has started to lick and swallow pebbles in my back patio area. Can you give me advise. I juse
ANSWER : A. There are two theories one being the dog is lacking minerals and the other is behavioral some dogs will lick and swallow rocks when they’re bored or anxious. So what do you do? Start by ruling out something medical by having him examined by your vet. If its determined he’s healthy and it might be behavioral then you can address the behavioral issue by giving the dog more attention, exercise, etc I would be more than happy to trouble shoot this issue with you through a private consult.

Until you determine what the cause is I would not leave your dog unsupervised where he can ingest pebbles or other foreign objects. If you must leave the house you can consider kenneling (if you’re not already doing so), When you’re out for a walk or break keep a close eye that he does not ingest rocks, ingesting them is very dangerous and might require surgery to remove them.

This type of issue is best addressed through a private consult. There can be several other reasons why your dog is eating pebbles,what I wrote above is just the most common (not saying they apply to your dog) a private consult we will do a Q&A and get to the bottom of this.

Thank you

Q. How much food should I feed my young adult cat?
ANSWER : A. It depends on the food. Look at the back of the bag of food and follow the feeding chart instructions. Make sure you’re feeding a high quality high protein food. Just because it’s a cheaper bag doesn’t mean you’re saving money. Cheaper foods mean you’re feeding more corn rather than meat to your pet. The cheaper quality the more your animal has to eat to obtain energy from the food. Meaning you’re buying more bags of food, whereas the more higher quality stuff will last you longer. Not to mention, you’ll have less poop to clean up! Investing in a higher quality food will keep your pet healthy longer. Ask a pet store associate to show you what foods are better for your cat.