[statehiprep]

Okay maybe I am just crazy. My dog has been updated on all her shots completely including rabies in nov/dec 06. A few days ago up in the country at my parents she got out unknowingly for a short time, but came back. Today when i was walking her she's been acting more agressive than normal and she is when being really active gets foamy around the outside of the mouth a little. She may have had this before i just never noticed but yes foam around the outside of her mouth. As i said she has her rabies vaccine, could this just be something natural, do dogs saliva naturally just foam at the mouth? How long is the rabbies vaccine last for? It may be important to note that she is also at the end of her spotting cycle right now(her period)she has no visible marks/bites anywhere that i have noticed as well and she NOT biting and such as i said i may just never have noticed foamy saliva before. shots were given at 4mth and a little after a year and she is 2 in june. Not in a high risk area...