It could be an age thing me thinks, My boy is unpredictable of late, he is 15 months old, until lately he was such a lovely boy and would play with any dog, the last 6-weeks or so he is a right thug, miserable little toad, and then depending on the dog, he will sometimes be delightful.
Its can be a teenage thing, pushing there luck, being bolshy wanting to be the boss
we can always sit, and rock together at this teenage phase
xx

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Sarah xxx