Hello
I just found this information about dogs and chocolate toxicity and thought you might find it interesting.
Chocolate Toxicity:
Levels of theobromine in Chocolate.
Concentration of theobromine varies with the formulation of the chocolate.
Milk chocolate has 44mg/oz (154mg/100gm)
Semisweet chocolate has 150 mg/oz (528mg/100gm)
Baking chocolate 390mg/oz (1365 mg/100gm)
(The theobromine in candies consisting of chocolate that is coated over some other substance - as in filled candies and chocolate coated dried fruits, etc will be more dilute than that in pure chocolate bars and solid chocolate candies.)
Toxic Amounts of Chocolate:
Dog's Weight - 2.2 kg.
Amount of Milk Choc - 113.4 g.
Amount of Unsweet Choc. - 14.1 g.
Approx. Mg. Theobromine - 200
Dog's Weight - 4.5 kg.
Amount of Milk Choc - 226.8 g.
Amount of Unsweet Choc. - 28.3 g.
Approx. Mg. Theobromine - 400
Dog's Weight - 9.0 kg.
Amount of Milk Choc - 453.6 g.
Amount of Unsweet Choc. - 70.8 g.
Approx. Mg. Theobromine - 900
Dog's Weight - 13.6 kg.
Amount of Milk Choc - 907.2 g.
Amount of Unsweet Choc. - 92.1 g.
Approx. Mg. Theobromine - 1300
Dog's Weight - 18.0 kg.
Amount of Milk Choc - 1.134 kg.
Amount of Unsweet Choc. - 127.5 g.
Approx. Mg. Theobromine - 1800
Dog's Weight - 22.6 kg.
Amount of Milk Choc - 1.360 kg.
Amount of Unsweet Choc. - 156.0 g.
Approx. Mg. Theobromine - 2250
Dog's Weight - 27.2 kg.
Amount of Milk Choc - 1.814 kg.
Amount of Unsweet Choc. - 198.4 g.
Approx. Mg. Theobromine - 2700
Dog's Weight - 31.7 kg.
Amount of Milk Choc - 2.268 kg.
Amount of Unsweet Choc. - 240.9 g.
Approx. Mg. Theobromine - 3400
P.S. I realise that these numbers are not "gospel" and that some dogs may be more sensitive to Theobromine than others. I just thought it was interesting as a general guide, showing the relationship between body weight and weight of chocolate consumed.