The British Veterinary Association (BVA) has issued a caution, as these traditional goodies could result in emergency vet visits this month.
Statistics from the Veterinary Poisons Information Service (VPIS) show that more than 100 enquiries were made about pets consuming chocolate last Easter.
Half of all enquiries about pets ingesting hot cross buns, which contain poisonous vine fruits, also came at this time.
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While 80 per cent of chocolate ingestion cases involve dogs, the VPIS reports that 15 per cent relate to cats and three per cent to rabbits.
All pets can be harmed by chocolate, particularly dark chocolate.
Dogs are especially at risk due to theobromine, a chemical in cocoa beans.
Theobromine takes a long time to break down in a dog's digestive system, meaning even small quantities of chocolate can be toxic, particularly for smaller dogs and puppies.
The BVA also warns that raisins and sultanas in hot cross buns and simnel cakes, plus xylitol in sugar-free treats, are dangerous for dogs.
British Veterinary Association junior vice president Rob Williams said: “Chocolate eggs and hot cross buns are just a few of the treats which spring onto the shelves at this time of year.
“While they are delicious for us, the VPIS statistics show they are also tempting – but toxic – to our pets.”
Symptoms of chocolate poisoning, such as excessive thirst, vomiting, diarrhoea and restlessness, typically appear within 12 hours of consumption and can last for up to three days.
In severe cases, pets may suffer from fits, heartbeat irregularities and even coma or death.
The BVA urges pet owners to contact their vet immediately if they suspect their pet has ingested something harmful.
