Catherine Zeta-Jones may be enjoying a long summer holiday in Majorca alongside her family, including her parents Patricia and David – but her 'bestie' was on her mind on Thursday for a very special reason.MORE: Catherine Zeta-Jones in tears as her daughter Carys packs for collegeTaking to Instagram, the Hollywood star shared the cutest video featuring her dog Taylor Douglas to mark National Dog Day. WATCH: Catherine Zeta-Jones and niece Ava speak Welsh in adorable video"Happy National Dog Day