### Instruction: What human foods are toxic to dogs?
### Input: Several human foods and household ingestible are toxic to dogs, including chocolate solids, causing theobromine poisoning, onions and garlic, causing thiosulphate, sulfoxide or disulfide poisoning, grapes and raisins, macadamia nuts, and xylitol. The nicotine in tobacco can also be dangerous to dogs. Signs of ingestion can include copious vomiting (e.g., from eating cigar butts) or diarrhea. Some other symptoms are abdominal pain, loss of coordination, collapse, or death.[page needed]
### Response: It's always good to check with your vet before giving your dog human foods. Human foods that are most toxic to dogs are: chocolate, onions, garlic, grapes, raisins, macadamia nuts, xylitol, and nicotine.