I came across this site researching data on the ProHeart 6 injections...sad to say, but I really believe that I lost my Ginger in July because of this shot...I will not beat myself up about this as I gave her all the medical attention that was available and most certainly love beyond all measure....I still have (3) precious boxers (1 brindle, 2 white/brindle) to love and cherish...but you can believe they will never be inoculated with ProHeart again!!! I count my blessings they seem to have survived the "poison" but sadly, Ginger did not..I miss her so very much and look at her photo daily and smile still feeling the love she continues to send me...God bless all of you and your precious happy go lucky boxers....when you have a chance, e-mail me with your stories of your "babies"...