Wanted: Puppy for Christmas in Truro, Nova Scotia

I am looking for a companion for my 3 year old collie who is missing her friend that we sadly had to put down last year. The collie is a purebred but I am looking for a mixbreed, as I do not want to spend much money. I am looking for a puppy, preferably 3 months of age or less.Would like a puppy so it can be easily introduced to our home, we have 2 cats as well as our other dog and tons of land for the puppy to run. Would like to be able to get the puppy before christmas. Any information would be great.
Thanks