Paw Pampering | Chocolate toxicity calculator

Dog or cat ate chocolate? Start here.

Estimate known chocolate exposure for dogs. For cats or uncertain details, prepare for a veterinary call. No email required.

Get professional help now

Call your veterinarian or nearest emergency clinic. US poison services, 24/7:

Call Pet Poison Helpline
855-764-7661 Call ASPCA Poison Control
888-426-4435

Consultation fees apply or may apply. Outside the US, contact your local veterinarian or animal poison service.

How to use this tool

Check the urgent signs above. Call first if you are concerned.
Choose your pet, symptoms and any other hazards.
Enter only details you know. Check the weight and units. Choose unknown instead of guessing.
Read the next action first. You can copy, download or print the recap. Emailing it is optional and must not delay care.

For a known dog exposure, use the actual plain chocolate weight. Cat and uncertain-input paths provide professional-contact guidance, not a numerical clearance.

1. Check the situation first

Which pet?

Any symptoms now?

Severe signs are listed above. Other symptoms include vomiting, diarrhea or restlessness. If unsure, call now.

Other ingredients or packaging?

Check the label and missing packaging. These concerns are separate from the chocolate amount.

More than one pet may have eaten it; individual amounts are unclearKnown heart condition, seizure history or another medical concern

2. Estimate only what you know

These details are optional when the tool directs you to call. Do not delay care to complete them. For a calculation, use plain chocolate weight, not the whole weight of a brownie or filled candy.

Pet weight

I do not know the weight

Use a recent measured weight. Select the unit first. If you change units afterward, the number converts automatically.

Chocolate or food type

Chocolate amount eaten, or maximum plausible amount

I do not know the amount

Use a decimal point, not a comma: enter 1000 for one thousand or 0.5 for one half. A piece or square has no standard weight. Choose unknown if you cannot establish the amount.

Help using a package or equal pieces

Use only a plain chocolate product with known package weight. For example, half of a 100 g bar is 50 g. If a 100 g bar has 10 equal squares, 3 squares are 30 g. Do not use these example weights for a different product or divide a dessert’s weight as though it were pure chocolate.

3. Details for the callWhen might it have happened?

Time does not reduce the ingested-dose estimate. Call even if hours have passed or your pet looks normal.

No treatment or outcome is predicted. Entries stay in this page unless you choose to email or save the recap. This does not create an online health record.

Call US Pet Poison Helpline
855-764-7661 Call US ASPCA Poison Control
888-426-4435

Fees apply or may apply. Elsewhere, contact your local veterinarian or emergency clinic.

Details to share with the veterinarian

This is a recap of this incident, not a care plan. Check the entries and share the actual packaging.

Incident summary

Download saves a text file on your device. The printable page offers Print or Save as PDF using your browser. Avoid saving private details on a shared device.

How the estimate works

Estimated combined theobromine and caffeine exposure in mg/kg = chocolate grams × assumed concentration in mg/g ÷ dog weight in kg. One pound is 0.45359237 kg; one ounce is 28.349523125 g. The amount assumes the entered chocolate was swallowed. Actual concentrations vary.

Plain product	Assumed mg/g
Milk chocolate	2.3
White chocolate	0.04
Unsweetened baking chocolate	15.5
Unsweetened cocoa powder	28.5
Labeled dark bar	15.5 × cocoa percentage ÷ 100

Dog reference points: signs around 20 mg/kg, heart effects around 40 to 50 mg/kg, and seizures at 60 mg/kg or more. This tool escalates at 40 mg/kg. Individual responses vary. These are not safety boundaries, and no dog bands are applied to cats.

Source: Merck Veterinary Manual: Chocolate toxicosis in animals.

My dog ate chocolate but seems normal. What should I do?

Contact a veterinarian or animal poison service now. Signs can be delayed, so normal behavior does not establish safety. Share the product, amount, weight and timing you know.

Why can I not enter the whole weight of a brownie?

A brownie, cookie or filled candy contains other ingredients in variable proportions. Treating its whole weight as plain chocolate gives a misleading estimate. Select Dessert / mixed food and share the packaging or recipe with the professional.

What if the food or amount is unknown?

Choose the unknown or mixed-food option and call. Do not enter an invented number. Save the packaging, remaining food and a photo of the ingredients for the professional assessing your pet.

Does white chocolate mean there is no concern?

No. The methylxanthine estimate is only one part of the incident. Other ingredients, packaging and the food itself can still require veterinary assessment.

Can I use this for a cat?

Choose Cat to get professional-contact guidance and an incident recap. This version deliberately provides no numeric feline risk classification.

Prepared by Paw Pampering. Version 2.0: clearer input rules, separate hazard details and optional result saving. Source check: September 28, 2026. This implementation has not been reviewed by a veterinarian. Sources inform the tool but do not endorse or validate it. Pet Poison Helpline guidance · ASPCA guidance