<P> Set in Pasadena, California, Avery Jennings' mother, Ellen, had just married Tyler and Chloe James' father, Bennett, so now the new family needs to make some adjustments on living together . They face an even bigger adjustment when they discover that their new dog, Stan, can talk . Only Avery, Tyler, and Chloe know this . Unbeknownst to the family, Stan also has a blog where he discusses happenings in the Jennings--James household . The children learn of Stan's talking ability in the first episode and agree to keep it a secret from their parents, fearing if the world finds out that Stan can talk, he will be taken away for experimentation . </P> <Ul> <Li> Avery Jennings (G Hannelius) is the highly intelligent, hard - working step - sister of Tyler and Chloe . She hates the fact that Tyler feels everything has to go his way and that good things always seem to happen to him, such as in "Stan of the House" when Tyler books the living room as an excuse to have the school cheerleading squad come over . Avery is very straightforward in following the rules and reluctantly goes along with what Tyler does . She is very smart, an overachiever, and knows what she wants . She wants everything to be handled in an orderly fashion, such as posting sign - up sheets for the living room and bathroom . Avery is socially responsible and despises boys like Tyler, though the two do have brother--sister heart - to - heart discussions showing that, at the end of the day, no matter how much Tyler annoys her, they love each other . She did not always love to take risks, but this changes when she steals a large pig in one episode . Avery is a very good problem solver and is the school president . </Li> <Li> Tyler James (Blake Michael) is the popular brother of Chloe and step - brother of Avery . He seems to get by with his good looks, adding to Avery's jealousy, often causing the two to fight . Manipulative and occasionally a little vain, good things always seem to happen to him; he can get any pretty girl to go out with him and is extremely charismatic. Tyler is a math genius, found out later in the first season, and although he is very smart, Tyler is slacking off in school due to laziness, but in "Stan of the House" he learns he needs to act more like a brother toward Avery and will, on some occasions, show his soft, serious, and mature side . Although he can sometimes be shown to be carefree and too laid back, Tyler will rush to a person's side when they need help, showing that he cares about people and is not at all judgmental or a bad person, as seen in "Stan of the House" when he comforts Avery after she breaks down crying over losing Stan . He can also be shown to be a little air - headed, but he has a quick wit and, like Avery, he knows what he wants and he will not stop at anything to get it . </Li> <Li> Chloe James (Francesca Capaldi) is the younger sister of Tyler and step - sister of Avery . A running gag in the show is that the family will go somewhere and forget to bring Chloe home, and when they realize their error, they scream her name at the same time . Chloe is known to love candy, though her parents do not allow her to eat too much . She secretly hides sweets around the house in places like pillow cases and TV remote battery compartments . She has a very active imagination, making up new names for various body parts and scares Tyler while he sleeps . </Li> <Li> Bennett James (Regan Burns) is Tyler and Chloe's father and Avery's step - father . He is a child psychologist who often acts immature and childish himself and is the author of several books in which he uses his family as examples, only changing the names . He always tries to think of ways to get his children to come together . He is also shown to be quite conceited . Sometimes his wife thinks he got his psychology degree online as his attempts at practicing psychology do not seem to go well . In "Stan of the House", he introduces Stan to the blended family in hopes that the dog will help his children bond . </Li> <Li> Ellen Jennings (Beth Littleford) is Avery's mother and Tyler and Chloe's step - mother . She does not like dogs and makes it known that she does not like Stan; however, by the end of Howloween, she and Stan get along . It is later revealed that she dislikes Stan due to an incident with a dog she had adored who suddenly left her . Due to this, she is reluctant to bond with Stan . She loves making jokes, often followed by her catchphrase, "Good one, Ellen!" She has been married to Bennett long enough to absorb some of his habits, including being scatterbrained . This could well account for their constant forgetting about Chloe . In Who's Training Who? Ellen hires a master dog trainer to keep Stan off the couch . Ignoring the trainer by daydreaming, Stan ends up outside until the children convince him that he's one of them, and he gives in and accepts the new dog bed Ellen bought him . </Li> </Ul> <Li> Avery Jennings (G Hannelius) is the highly intelligent, hard - working step - sister of Tyler and Chloe . She hates the fact that Tyler feels everything has to go his way and that good things always seem to happen to him, such as in "Stan of the House" when Tyler books the living room as an excuse to have the school cheerleading squad come over . Avery is very straightforward in following the rules and reluctantly goes along with what Tyler does . She is very smart, an overachiever, and knows what she wants . She wants everything to be handled in an orderly fashion, such as posting sign - up sheets for the living room and bathroom . Avery is socially responsible and despises boys like Tyler, though the two do have brother--sister heart - to - heart discussions showing that, at the end of the day, no matter how much Tyler annoys her, they love each other . She did not always love to take risks, but this changes when she steals a large pig in one episode . Avery is a very good problem solver and is the school president . </Li> <Li> Tyler James (Blake Michael) is the popular brother of Chloe and step - brother of Avery . He seems to get by with his good looks, adding to Avery's jealousy, often causing the two to fight . Manipulative and occasionally a little vain, good things always seem to happen to him; he can get any pretty girl to go out with him and is extremely charismatic. Tyler is a math genius, found out later in the first season, and although he is very smart, Tyler is slacking off in school due to laziness, but in "Stan of the House" he learns he needs to act more like a brother toward Avery and will, on some occasions, show his soft, serious, and mature side . Although he can sometimes be shown to be carefree and too laid back, Tyler will rush to a person's side when they need help, showing that he cares about people and is not at all judgmental or a bad person, as seen in "Stan of the House" when he comforts Avery after she breaks down crying over losing Stan . He can also be shown to be a little air - headed, but he has a quick wit and, like Avery, he knows what he wants and he will not stop at anything to get it . </Li>

Who play avery in dog with a blog