These are planning points, not promises. If you are choosing a puppy, find out whether the Poodle parent is Toy or Miniature, meet the parents when possible, and ask about the adult dogs in that family. If you are adopting, the foster home or rescue may be the best source for the dog's real size, coat care, activity level, and comfort around people and other animals.
Shihpoos are often described as companion dogs because both parent breeds were developed to live closely with people. That does not mean every Shihpoo has the same personality. One may be happy to greet everyone, while another is more watchful, busy, or reserved. A Poodle influence can bring more interest in games and learning; a Shih Tzu influence can bring a slower, people-centered style. The individual dog matters more than the label.
This is a dog that usually does best as part of daily life, not as a pet left to entertain itself for long stretches. A Shihpoo may enjoy a lap, a short game of fetch, a sniff around the block, and then a nap nearby. It still needs attention, training, and a dependable routine. Small does not mean no work.
The mix can look very different from dog to dog. Some have a shorter muzzle, rounder eyes, and a softer coat. Others look more Poodle-like, with a longer muzzle or a curlier coat. Do not choose based on a single puppy photo. Ask about grooming needs, breathing, behavior, and how the dog handles everyday sounds, visitors, being picked up, and time alone.