Vienna Calling Beagle & English Foxhound Kennel
Am Graben 28
3470 Kirchberg am Wagram

Toxic to the dog

Below is a selection of the most common causes of poisoning in dogs and the corresponding symptoms. The list is not exhaustive! 
It is highly advisable to consult your veterinarian if intoxication is suspected. Because once rather unnecessarily, than too once late.
Aspirin ( acetylsalicylic acid ) - subsequent organ damage, lethal at high dose
Paracetamol - stomach bleeding, fatigue, liver damage
Ibuprofen - clouding of consciousness, increased water intake, increased urine output, vomiting
Diclofenac - bleeding, vomiting, diarrhea, emaciation
Onions (N- propyldisulphide) - anemia
Garlic (allicin) - anemia
Avocado - damage to the heart muscle
(Dark) chocolate ( theobromine ) - excitement, baking chocolate can be lethal in small doses
Antifreeze (ethylene glycol) - thirst, fainting, kidney damage
Salt - to spicy foods: thirst, vomiting, diarrhea, colic, muscle twitching, seizures - and even death
Alcohol - vomiting, incoordination, difficulty breathing, coma - and even death
Coffee (caffeine) - different 
Tea (caffeine, theophylline) - different 
Nicotine - excitation
Macadamia nuts - stiff gait, liver damage
Fruit stones (peach, apricot, plum) - respiratory arrest
Grapes / raisins - acute renal failure
Ice candies, sweets with sugar substitute and Toothpaste (Xylitol) - liver damage, hypoglycemia
Strychnyn (possibly in prey) - generalized hypersensitivity (light, noise, etc. )
Thallium (formerly used for decontamination, long-term accumulation in soils) - chronic -> hair loss
Coumarin (rat poison, but in small doses in cinnamon , strawberries, etc.) - increased bleeding
Slug pellets (usually metaldehyde) - dilated eyes, staggering, convulsions, vomiting
Diffenbachie  - mucosal swelling , blisters, ulcers, kidney damage, eye damage, loss of voice, deadly even in small doses
Dragon Tree, Dragon Lily - gastrointestinal complaint
Ivy - general symptomatology
FicusBenjaminus - general symptomatology
Pine needles - Kidney and liver damage
Christmas Star - lethal even in small doses
Amaryllis - even in small doses lethal (especially the bulb)
Azalea - general symptomatology
Boxwood - first excitement, then blood pressure- lowering
Begonia - vomiting, diarrhea
Mountain Laurel- salivation, vomiting, diarrhea, colic, loss of appetite, incoordination, weakness, muscle twitching
Monkshood - vomiting, diarrhea, colic , excessive urination , arrhythmia , hypothermia
Angel's Trumpet - vomiting, diarrhea, enlargement of the pupil of the eye, cardiac arrhythmia, dry mucous membranes, agitation, depression, difficulty swallowing
Holly - highly toxic
Yew - cardiac arrest
Fingerhut - cardiac arrest
Laburnum - respiratory arrest
Lily of the Valley -  cardiac arrest
Hyacinth - vomiting, colic, diarrhea
Elderberry - respiratory arrest
Oleander - cardiac arrest
Cyclamen - vomiting, diarrhea, colic, circulatory disorders, convulsion , respiratory paralysis
Saponins - central nervous system
Rhododendron - general symptomatology