I think the better question is this - is the KM Ant Pro system safe around dogs? If you place the dispensers where dogs or any large animal can get to them, they are probably going to be played with and turned over. The Gourmet Liquid Ant Bait has the toxicity of table salt. The dogs would probably enjoy it, since it is a sweet based liquid. The ingredient could be harmful if they consume enough, just as would table salt.
In over 12 years, and over 100,000 dispensers sold, we have never had any report of harm or injury to pets.