Is Grapes and Raisins Toxic to Newfoundlands?

Quick Answer: YES - Grapes and Raisins is highly toxic to Newfoundlands and can be fatal.

Newfoundland Specific Note: Giant breed, sensitive to certain foods

Toxicity Severity: High

Symptoms of Grapes and Raisins Poisoning in Newfoundlands

If your Newfoundland has eaten grapes and raisins, watch for these symptoms:

Vomiting, diarrhea, lethargy, kidney failure, death

Timeline: Symptoms typically appear within 30 minutes to 2 hours of ingestion.

What Makes Grapes and Raisins Toxic?

The toxic compound in grapes and raisins is Unknown (tartaric acid suspected).

How it works: The exact toxic compound is unknown, but it can cause acute kidney failure in some dogs. Not all dogs are affected, but there’s no way to predict which dogs will develop kidney failure.

Newfoundland-Specific Considerations

⚠️ Special Warning for Giant Breeds

Giant breeds are at higher risk of bloat. Avoid large meals and foods that can cause gas or stomach torsion.

Newfoundlands are at higher risk of bloat. If your dog has eaten grapes and raisins, watch carefully for signs of bloat in addition to other symptoms.

What to Do If Your Newfoundland Ate Grapes and Raisins

Immediate Steps:

1. Remove the source - Get any remaining grapes and raisins away from your dog
2. Call your veterinarian - Even if symptoms seem mild, professional guidance is essential
3. Do NOT induce vomiting unless specifically instructed by your veterinarian
4. Save the packaging - Bring any packaging or remnants to help identify amount ingested

When to Call Emergency Vet:

• Immediately - Any amount of grapes and raisins requires emergency care

Treatment for Grapes and Raisins Poisoning

Treatment varies based on the type of toxin and severity:

Common treatments may include:

• Induced vomiting (if caught early and safe to do so)
• Activated charcoal to absorb toxins
• IV fluids to support kidney function
• Medications to control symptoms
• Hospitalization for monitoring

Recovery time: Depends on severity and how quickly treatment was started. Severe cases may require several days of hospitalization.

Prevention: Keeping Your Newfoundland Safe

Storage Tips:

• Store grapes and raisins in sealed containers out of reach
• Never leave food unattended on counters or tables
• Use child-proof latches on low cabinets
• Educate family members and visitors about toxic foods

Training Tips:

• Teach “leave it” and “drop it” commands
• Reward your dog for ignoring food on the ground
• Supervise your dog during meals and food preparation
• Keep trash cans secured

Safe Alternatives:

Looking for safe treats for your Newfoundland? Consider:

• Carrots
• Green beans
• Apple slices (without seeds)
• Plain cooked chicken
• Commercial dog treats

Other Foods Toxic to Newfoundlands

Newfoundlands should avoid these common toxic foods:

• Chocolate (High severity)
• Onions and Garlic (High severity)
• Xylitol (Artificial Sweetener) (High severity)
• Alcohol (High severity)
• Caffeine (High severity)
• Macadamia Nuts (High severity)
• Avocado (Medium severity)
• Cooked Bones (High severity)
• Dairy Products (Low severity)
• Salt (Medium severity)

Learn more: Complete list of foods toxic to dogs

Bottom Line

Grapes and Raisins is highly toxic to Newfoundlands and can be fatal. Never feed grapes and raisins to your dog, and keep it securely stored. If your Newfoundland ingests grapes and raisins, seek immediate veterinary care.

Frequently Asked Questions

How much Grapes and Raisins is toxic to a Newfoundland?

Toxicity depends on the amount ingested and your dog’s size. Even small amounts can be dangerous. Always consult your veterinarian if you’re concerned.

Can Newfoundlands build tolerance to Grapes and Raisins?

No. Dogs do not build tolerance to toxic foods. Repeated exposure can actually increase the risk of serious health problems.

What if my Newfoundland ate Grapes and Raisins but seems fine?

Don’t wait for symptoms. Some toxins don’t show immediate effects but can still cause serious damage. Contact your veterinarian immediately.

Are there any safe amounts of Grapes and Raisins for Newfoundlands?

No. There is no safe amount of grapes and raisins for dogs.

Last updated: April 08, 2026

Disclaimer: This information is for educational purposes only and is not a substitute for professional veterinary advice. If your dog has ingested a toxic substance, contact your veterinarian immediately.