Here is a great (VERY LONG) list of things that can be dangerous to your dogs. From household chemicals, OTC or Rx medicines, plants, foods & other things.
PRINT THIS LIST & BOOKMARK THE LINK SO YOU HAVE IT READILY AVAILABLE - It is an invaluable resource.
The list is alphabetical & one of the most comprehensive I've found with 326 items (I don't think you could get an exhaustive list, but this is the best I've seen on the web). If you click on an item such as "ACE-inhibitors" & you will get whether it's harmful to dogs or cats, signs/symptoms, some common names & a high-level overview of why it is dangerous to pets. You can also choose to view only items on the list by categories: Envenomations, Fertilizers, Foods, Garage Items, Garden Items, Herbals, Household Items, Illicit Drugs, Insecticides, Medications, Metals, Plants, Topical Medication, Toxic Gases.
5-fluorouracil (5-FU) Medications
A:
ACE-inhibitors Medications
Acetaminophen Medications
Acids Household Items
African Evergreen Plants
African Wonder Tree Plants
Alcohol Foods
Alkalis Household Items
Alocasia Plants
Aloe Vera Plants
Amaryllis Plants
Ambien Medications
American Bittersweet Plants
Amitraz Insecticides
Amphetamines Medications
Andromeda Japonica Plants
Angel’s Trumpet Plants
Anthurium Plants
Antibiotics Topical Medications
Antidepressants Medications
Antifreeze Garage Items
Antihistamines Medications
Apple Leaf Croton Plants
Apricot Foods
Arrowhead Vine Plants
Asparagus Fern Plants
Aspirin Medications
Asthma Inhaler Medications
Australian Nut Foods
Autumn Crocus Plants
Avocado Foods
Azalea Plants
B:
Baby’s Breath Plants
Baclofen Medications
Baneberry Plants
Batteries Household Items
Bear Grass Plants
Beech Trees Plants
Belladonna Plants
Benzodiazepines Medications
Beta-blockers Medications
Bird of Paradise Plants
Black Locust Plants
Black Widow Spider Envenomations
Bleeding Hearts Plants
Bloodroot Plants
Blue-green Algae (Cyanobacteria) Plants
Bluebonnet Plants
Bone Meal & Blood Meal Fertilizers
Boxwood Tree Plants
Branching Ivy Plants
Bread Dough Foods
Bromethalin Garage Items
Brown Recluse Spider Envenomations
Buckeye Plants
Buddhist Pine Plants
Burning Bush Plants
Buttercup Plants
C:
Caffeine Foods
Caladium Plants
Calcipotriene Medications
Calcium Channel Blockers Medications
Calcium Supplements Medications
Calla Lily Plants
Camphor Topical Medications
Candelabra Cactus Plants
Carbamates Garage Items
Carbon Monoxide Toxic Gases
Cardiac Glycosides Plants
Carprofen Medications
Castor Bean Plants
Charming Dieffenbachia Plants
Cherry Foods
Chinaberry Tree Plants
Chinese Evergreen Plants
Chives Plants
Chocolate Foods
Chokecherry Plants
Cholecalciferol Garage Items
Christmas Rose Plants
Chrysanthemum Plants
Cineria Plants
Clematis Plants
Cocaine Illicit Drugs
Coins Metals
Coral Snake Envenomations
Cordatum Plants
Corn Plant Plants
Cornflower Plants
Corticosteroids Topical Medications
Corydalis Plants
Cough Medicine Medications
Cowbane Plants
Crocus Plants
Croton Plants
Crown of Thorns Plants
Currants Foods
Cyclamen Plants
D:
Daffodils Plants
Daphne Plants
Day Lily Plants
Decongestants Medications
Delphinium Plants
Deramaxx Medications
Detergents Household Items
Devil’s Ivy Plants
Dieffenbachia Plants
Diuretic Medications
Dogbane Plants
Dracaena Plants
Dragon Tree Plants
Dumbcane Plants
E:
Easter Lily Plants
Effexor Medications
Elaine Plants
Elderberry Plants
Elephant Ear Plants
Emerald Feather Plants
English Ivy Plants
Ephedra Herbals
EtoGesic Medications
Eucalyptus Plants
Euonymus Plants
F:
Ferns Plants
Fertilizers Fertilizers
Ficus Plants
Fiddle-Leaf Philodendron Plants
Firestarter Logs Household Items
Fireworks Household Items
Firocoxib Medications
Flamingo Plant Plants
Flax Plants
Flea and Tick Medications Medications
Flea Collar Medications
Fluoride Household Items
Four O’Clock Plants
Foxglove Plants
G:
Garlic Foods
Gasoline Garage Items
Geranium Plants
Giant Dumbcane Plants
Glacier Ivy Plants
Gladiolas Plants
Glory Chain Plants
Glory Lily Plants
Glow Jewelry Household Items
Gold Dieffenbachia Plants
Gold Dust Dracaena Plants
Golden Chain Tree Plants
Golden Pothos Plants
Gopher Purge Plants
Gorilla Glue Household Items
Grapes Foods
H:
Hahn’s Self Branching English Ivy Plants
Hand Sanitizer (Ethanol) Household Items
Hand Warmers Metals
Heartleaf Philodendron Plants
Heavenly Bamboo Plants
Hellebore Plants
Hemlock Plants
Herbicides Garden Items
Holly Plants
Honeysuckle Plants
Hops Foods
Hornets Envenomations
Horse Beans Plants
Horse Chestnut Plants
Horsehead Philodendron Plants
Hurricane Plant Plants
Hydrangea Plants
Hydrocarbons Garage Items
I:
Ibuprofen Medications
Imidazoline Medications
Iris Plants
Iron Metals
Isoniazid Medications
Ivermectin Medications
J:
Jack-in-the-Pulpit Plants
Japanese Show Lily Plants
Java Beans Plants
Jerusalem Cherry Plants
Jessamine Plants
Jimson Weed Plants
Jonquil Plants
Jungle Trumpet Plants
K:
Kalanchoe Plants
Kerosene Garage Items
L:
Lace Fern Plants
Lacy Tree Plants
Lantana Plants
Larkspur Plants
Lead Metals
Leeks Plants
Lilies Plants
Lily of the Valley Plants
Liquid Potpourri Household Items
Locoweed Plants
Long-acting Anticoagulants Garage Items
Lunesta Medications
Lupine Plants
M:
Macadamia Nuts Foods
Madagascar Dragon Tree Plants
Marble Queen Plants
Marigold Plants
Marijuana Illicit Drugs
Matches Household Items
Mayapple Plants
Meloxicam Medications
Metaldehyde Insecticides
Methionine Medications
Methylphenidate Medications
Mexican Breadfruit Plants
Milkweed Plants
Miniature Croton Plants
Mistletoe Plants
Mock Orange Plants
Moldy Food (Mycotoxins) Foods
Monkshood Plants
Morning Glory Plants
Mothballs Household Items
Mother-in-Law’s Tongue Plants
Mountain Laurel Plants
Mouse and Rat Poison Garage Items
Moxidectin Medications
Mushrooms Foods
N:
Naproxen Medications
Narcissus Plants
Needlepoint Ivy Plants
Nicotine Medications
Nightshade Plants
NSAIDs Medications
O:
Oleander Plants
Onions Foods
Opioids & Opiates Medications
Organophosphates Insecticides
Oriental Lily Plants
Oxalates (Insoluble) Plants
Oxalates (Soluable) Plants
P:
Paintballs Household Items
Paraquat Garden Items
Peace Lily Plants
Peach Pits Foods
Pencil Cactus Plants
Pennyroyal Oil Herbals
Peony Plants
Periwinkle Plants
Pesticides Garage Items
Petroleum Distillates Garage Items
Phenylpropanolamine Medications
Philodendron Plants
Phosphides Garage Items
Pimobendan Medications
Pine Oil Household Items
Play Dough (Homemade) Foods
Plumosa Fern Plants
Poinciana Plants
Poinsettia Plants
Poison Hemlock Plants
Poison Ivy Plants
Poison Oak Plants
Pokeweed Plants
Poppy Plants
Potato (Green) Foods
Precatory Bean Plants
Primrose Plants
Privet Plants
Propylene Glycol Garage Items
Pyrethrins & Pyrethroids Insecticides
Q:
Queensland Nut Plants
R:
Raisins Foods
Rattlesnake Envenomations
Red Lily Plants
Red-Marginated Dracaena Plants
Rhododendrons Plants
Rhubarb Plants
Ribbon Plant Plants
Rubber Tree Plant Plants
Rubrum Lily Plants
S:
Saddle Leaf Philodendron Plants
Sago Palm Plants
Salt Foods
Schefflera Plants
Scorpions Envenomations
Scotch Broom Plants
Shamrock Plants
Skunk Cabbage Plants
Sleep Aids Medications
Smoke Inhalation Toxic Gases
Snowdrops Plants
Spider Lily Plants
Spiders Envenomations
Spotted Dumbcane Plants
Star Fruit Foods
Star of Bethlehem Plants
Stargazer Lily Plants
Stinging Nettle Plants
String of Pearls Plants
Striped Dracaena Plants
Strychnine Garage Items
Super Glue Household Items
Sweet Pea Plants
T:
Taro Vine Plants
Tea Tree Oil Herbals
Thyroid Medications Medications
Tick Collar Medications
Tiger Lily Plants
Tinsel Household Items
Toads Envenomations
Tobacco Plants
Tomato Plants
Tree Philodendron Plants
Tropic Snow Dumbcane Plants
Tulips & Hyacinths Plants
Tung Tree Plants
V:
Virginia Creeper Plants
Vitamins Medications
W:
Warneckei Dracaena Plants
Water Hemlock Plants
Weeping Fig Plants
Windshield Wiper Fluid Garage Items
Wisteria Plants
Wood Lily Plants
X:
Xylitol Foods
Y:
Yesterday, Today, Tomorrow Plants
Yew Plants
Yucca Plants
Z:
Zinc Metals