for the record, Millie has in the past pinched and eaten 3/4 of a plain Terry's chocolate orange - much to my horror, and tristian's annoyance :twisted: I told him not to leave it out! :roll:
I was mortified, and desperate to take her to the vets (it was the sunday after christmas, they would have had a field day with the bill) but we left her as she seemed ok, went a bit hyper later on, and then seemed to have a chocolate hangover
and a bit of an upset tum the following day - but she got chicken and rice out of it, so I doubt she minded! :roll: :twisted:
Anyway, obviously I don't condone feeding your dogs this amount of plain chcolate, however Millie was pretty much OK with it... so I wouldn't panic too much unless he starts showing signs of poisoning, such as lethargy, vomiting etc.
HTH