update...adding new dog

I posted a little bit ago and asked for advice on adding another dog to my home. I am happy to say that we adopted Max, the 5yr old beagle who needed some help with his weight. Balto, my border collie, immediately tried to kill him. I took Balto straight to the pet store to purchase a muzzle. I muzzled Balto for a few hours....he settled down and seemed to understand that Max is not a threat. Unmuzzled my dog and the two of them are now doing well together. I really thought it would take longer than that. They do not love each other yet....but give it time. Balto and Max are sharing space well! Thank goodness.