http://www.smartgroups.com/message/readmessage.cfm? gid=1423922&messageid=9937&startid=9941 Yes giving the whole tablet of the dog 0-25 lb dog Heartgard would be recommended. Unfortunately the ivermectin is not equally distributed through the chewable Heartgard, so giving the whole chewable is recommended. The heartgard for cats is a much smaller size tablet, so it is easier to give. Likewise the 0-10 lb dog Interceptor is the smallest tablet, and is the easiest tablet to give (mine will actually eat it). Revolution is another option. This is a liquid to just put on their back, so it is real easy to give. Hope that helps, Jerry Murray, DVM [Posted in FML issue 4601]