No, it’s always good to have everything you need at home to groom your Shih Tzu properly! Grooming shears tend to come in different sizes and styles. It’s necessary for someone to have multiple pairs of grooming shears because you will eventually need them. For example, a pair of 5″ shears, 6″ shears, and 7″/8″ shears are ideal for most people to have in their grooming kit.