I do not know of any ingredients commonly used in guacamole that would make it unsafe to eat during pregnancy. Avacados are actually very nutritious, and would be a great thing to eat for you and...
Dogs are carnivores that can survive on a semi-omnivore diet, unlike cats (obligate carnivores). So guacamole won't hurt, although it is not recommended and may cause diarrhea (like any foreign...