In Harvest Moon Tree of Tranquility, how do you get the blue snake? Also, where's the squirrel?

I plan on getting the turtle, squirrel, dog(collie), snake(or boar), and the weasel. What is the list of pets?In Harvest Moon Tree of Tranquility, how do you get the blue snake? Also, where's the squirrel?
Dogs





-Chihuahua


-Beagle


-Border Collie


-Pyrenese





Cats





-White


-Black


-Orange Tabby





Rabbits





-White


-Black





Weasel's





-White


-Brown





Other





-Monkey


-Turtle


-Baby Boar


-Squirrel


-Tanuki (Racoon)


-Penguin


-Baby Panda


-Baby Bear

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