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Chocolate is Poisonous

Be Sure to Keep Chocolatey Treats Away from Your Pets This Easter

Are you succumbing to temptation, unwrapping those Easter Eggs that beckon to you from the mantelpiece? Go on. You deserve it!

Remember though, chocolate can be highly poisonous to your pets and, whether it’s Easter or not, should be kept away from them at all times. The degree of toxicity depends on the type of chocolate; white chocolate is the least toxic, followed by milk – with dark, unsweetened chocolate and cocoa powder being the worst.

The Science:

Theobromine is a caffeine-like ingredient found in cocoa beans, powder and all forms of chocolate. Cocoa powder and dark chocolate typically contain the highest levels, making them the most dangerous.

It does not take a large quantity of chocolate to cause a terrible reaction in your pet’s body. As a general rule, for every kilogram of your pet’s body weight, as little as 20mg of theobromine is enough to cause problems, and the signs will be more severe if over 40-60mg/kg is ingested.

Theobromine poisoning can affect your pet’s heart, lungs and central nervous system. Depending on their size, weight and how much they’ve eaten, symptoms can vary from vomiting and diarrhoea to internal bleeding and, sadly, death.

Symptoms of Chocolate Poisoning Include:

  • Sickness/vomiting
  • Diarrhoea
  • General restlessness (often associated with a fast or irregular heart rate)
  • Seizures
  • Internal bleeding

Because of their nature and taste buds, chocolate appeals more to dogs than cats. The effects of theobromine poisoning, however, are far worse in cats than in dogs.

If You Think Your Pet Has Eaten Chocolate

Symptoms can often take a few hours to appear, so do not wait until your pet shows signs! If there is any evidence to suggest they’ve eaten chocolate, you should contact your vet immediately.

Though there is not a ‘cure’ for theobromine poisoning, the vet will be able to take the appropriate action based on how much chocolate your pet has eaten and how long ago they ate it. If you act quickly, the vet will be able to make your pet sick or administer a liquid-activated charcoal to reduce absorption into the bloodstream – this is the most effective way of treating chocolate poisoning but it needs to be carried out within two hours of ingestion. In more exaggerated cases, your pet could end up in critical condition.

You Can Help!

If your pet does eat chocolate, make your vet aware of how much they’ve eaten and which type – do this as soon as possible! It’s also handy if you save the wrapper.

In general, keep all chocolate out of your pets’ reach. Store it in a high-up cupboard or in the fridge; is your pet tall or sprightly enough to jump onto the kitchen counter? Keep your pets away from you when you eat and, should you need the loo or if the phone rings, never leave chocolate unguarded. Exercise the same caution when using cocoa powder – this is even more toxic than chocolate.

Remember: there are plenty of tasty – and safe! – treats for your pets out there, so they don’t need to go unsatisfied this Easter.

Ellen Whale

Ellen Whale

Patient Care Assistant/ Receptionist
PCA

Ellen joined us in 2026 after previously working in another vet practice and an animal sanctuary.

She loves horses and has two of her own called Molly and Abbie.  she also has four dogs who she enjoys walking in the Norfolk countryside. 

Adri Rossouw

Adri Rossouw

Locum Veterinary Surgeon
BVSc CertAVP (FelMed) MRCVS

Adri qualified as a Vet Surgeon in South Africa in May 1992 before moving to the UK in 1998.  She was partner in a small animal vet practice in Norfolk before retiring in May 2023.  She missed working with animals so now works as a locum part time.  She brings a wealth of experience to the team.  She achieved a CertAVP Small Animal Medicine (feline medicine) certificate in 2023.  She also enjoys orthopaedic and soft tissue surgery. 

Outside work Adri enjoys gardening, cycling and walking as well as being involved in the Gateway Church in Kings Lynn.  Adri has a tuxedo cat called Karolus and the village peacock Bob has claimed her garden.

Helen Manson

Veterinary Surgeon
BVM&S CertVOphthal MRCVS

Helen moved to Norfolk after graduating from Edinburgh Vet School in 2003. After working in practices around King’s Lynn, she joined the practice in 2023.


Helen enjoys small animal medicine and has a special interest in Ophthalmology. Helen gained her post graduate RCVS certificate in Veterinary Ophthalmology in 2012 and offers internal and external referrals for eye cases at the practice.


Outside of work, Helen is kept busy with her three children, Daisy the Labrador and Maggie the cat. She is married to Liam.

Ben Mcdonnell

Clinical Director & Veterinary Surgeon
BVSc, BSc, Cert AVP (GSAS)MRCVS

Following his graduation from Liverpool University in 2008 Ben returned to his roots in Cumbria, where he spent a short period working in mixed practice, before making the decision to work solely as a small animal veterinarian. He moved to Norfolk in 2022, when he joined our team at Swaffham, becoming a clinical director in 2025. Ben enjoys all aspects of first opinion small practice work, but especially enjoys the surgical side of the job and achieved the Royal College Certificate in Advanced Veterinary Practice (General Small Animal Surgery) in 2021.


Outside work Ben is often found exploring the Norfolk countryside and coastline with his son Joey. His other interests include mountain biking, walking, running and more recently paddle boarding.

Emily Neep

Veterinary Surgeon
BVetMed BSc(hons) MRCVS

Emily joined Swaffham Veterinary Centre in 2023, having worked as a vet in Wales. Originally from Norfolk, she was very excited to move back home! She has a keen interest in exotic animal care and also is trained in acupuncture.


In her spare time, Emily enjoys exploring her creative side with various craft projects, from crochet to jewellery making and can often be heard singing along to her favourite musical (much to the nurse’s dismay!). She has always had pets at home, ranging from various cats and dogs to a pet toad!

Liam Manson

Clinical Director & Veterinary Surgeon
BVM&S GPCert (SAS) MRCVS

Liam founded Swaffham veterinary Centre in 2014, having worked in mid-Norfolk since graduating from Edinburgh University in 2003.  He completed a surgical certificate in 2007 and continues to have a keen interest in surgery but does enjoy the variety that a busy first opinion small animal practice gives each day.

Out of work Liam enjoys spending time with his wife and children, who all enjoy travelling in the UK and abroad.  he also enjoys exploring the beautiful Norfolk countryside with his Labrador Daisy.  When given the opportunity Liam is a keen gardener.