I've got one more question to add to Susy's questions: What food is Snickers having with his Lysodren and particularly what is the fat content of the food?
A certain amount of fat/oil in the food is necessary to Lysodren to be absorbed well and we have seen cases of dogs on huge doses of Lysodren that is being given with with very low fat food and who have been apparently not responding to the Lysodren at all but when some oil or fat was added to the food the dog responded normally - to a normal dose.
Alison