Hallett Veterinary Hospital

5744 Brown Street
Oconomowoc, WI 53066

(262)569-0801

hallettvet.com

Chocolate Toxicity in Dogs

Chocolate is toxic to dogs. Many foods contain small amounts of chocolate and are unlikely to be a problem. Baking chocolate and Semi-sweet morsels (chocolate chips) have the potential to cause serious illness if ingested. Refer to the  following chart for toxic levels based on the dog's body weight. Theobromine is the active ingredient in chocolate.    

S
igns of toxicity include:                                                                                                                                                                                                                          

  • Vomiting 
  • Diarrhea
  • Excessive urination
  • Muscle tremors
  • Rapid breathing
  • Rapid heart rate
  • Delirium
  • Hyperactivity, restlessness, agitation followed by depression and coma
  • Seizures
  • Sudden death from cardiac failure

 Toxic Amounts of Chocolate for Different Size Dogs:

Weight of dog

Milk Chocolate
(oz)

Semisweet (oz)

Unsweetened 
(Baking Chocolate) 
(oz)

Theobromine (mg)

5lbs

2

.7

0.23

225

10 lbs

4

1.4

.5

450

15 lbs

6

2.1

.7

680

20 lbs

8.2

2.8

.9

910

30 lbs

12.3

4.2

1.4

1360

40 lbs

16.4

5.5

1.9

1820

50 lbs

20.5

6.9

2.3

2270

60 lbs

24.5

8.3

2.8

2720

70 lbs

28.6

9.7

3.2

3180

80 lbs

32.7

11

3.7

3640

90 lbs

36.8

12.5

4.1

4090

100 lbs

41

13.8

4.6

4550