We can assist with identifying the shrub but we cannot provide information about toxicity to pets. Not all poisonous plants are on this list, so if you are wondering if a plant is poisonous, contact a plant expert for advice. Cotoneaster They are found in dense clusters on an evergreen shrub that tends to grow vertically instead of spreading out like a bush. Even something that isn't inherently poisonous can be dangerous too; swallowed Christmas tree needles, for example, can damage the delicate lining of a puppy's gastrointestinal tract. Also, be advised that the consumption of any plant material may cause vomiting and gastrointestinal upset for dogs and cats. According to the University of California at Davis department of plant sciences, the ingestion of cotoneaster species can cause mild toxicity in the form of vomiting and/or diarrhea. Cotoneaster bushes are often used to attract birds, butterflies and bees. Others, like mistletoe, can kill your puppy if he eats enough of the berries. There are many house and garden plants that are poisonous to dogs, a list of the most common ones are found below. Plants listed as either non-toxic, or potentially toxic with mild GI upset as their symptoms are not expected to be life-threatening to your pets. Many common garden and houseplants are poisonous if eaten by your puppy, some of which produce berries that are also toxic to our canine companions. Please respond with further questions or concerns if you wish. - Cotoneaster – small dark green elliptical-shaped leaves with bright red spherical berries. Please be sure to check the name of the plant to determine its toxicity. Take a look at a nannyberry viburnum. Are cotoneaster berries poisonous to dogs? Many plants that are poisonous to dogs are very common in backyards.These toxic time-bombs range from being only mildly toxic (for example, causing vomiting) to being responsible for serious canine health problems.If you wish to err on the safe side, thoroughly research all the vegetation and berries that your dog has access to. Although the cotoneaster's red buds, or cranberries, are pretty to behold, always keep your dog away from them. Cotoneaster cornubia makes a tree that can reach 4 to 8m high and wide. All plant parts are potentially poisonous. The ripe black berries themselves are very nutritious and safe for your dog, but be aware that the leaves, stems, unripe fruit and the root are all poisonous to both dogs and humans as they contain cyanide, albeit in very small quantities. However, these berries are very toxic to pets, particularly dogs, and you may want to ensure that the area is clear of this plant before letting your pet run free. Please contact your veterinarian. The shrub appears to be too tall for a cotoneaster and the berries are red and do not turn blue or have this shape. Starting from the left: Yew berries, Pokeweed berries, Cotoneaster berries, Blue Colash berries Here are just a few common berries that are poisonous: Yew, Pokeweed, Bittersweet, Belladonna, Ivy, Mistletoe, Poison Ivy, Holly berries, Jerusalem Cherry, Doll's Eyes and Cotoneaster berries. A puppy or dog may get a stomach upset or diarrhoea from ingesting berries as can humans. on the other hand, the flowers, berries and shelter these plants provide are invaluable to many insects, birds and small creatures. • Bulbs (onions, plus all the spring-flowering favourites, such as daffodils, tulips, jonquils, and snowdrops) • Caladium bicolor (indoor foliage plant) • Castor oil plant (Ricinus communis) List of Plants Toxic to Dogs • Anemone or windflower (A. coronaria)• Brunfelsia (Yesterday-Today-Tomorrow plant causes seizures when dogs eat the toxic berries and seed pods. 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