The Blue Peter pets are animals that regularly appear on the long-running BBC children's television series "Blue Peter".
 For 27 years, when not on TV, these pets were often looked after by "Blue Peter"'s long-standing pet keeper Edith Menezes, who died in 1994.
 The first pet was a dog named Petra in 1962, and since then there have been several dogs, cats, tortoises, and parrots, and horses Joe And Simon.
 The current animals on the show are Shelley the tortoise and Iggy the trainee guide dog puppy.
 Rags, a pony, named by viewers, was purchased with the proceeds of a Christmas appeal in the late 1970s as a Riding for the Disabled horse.
 The Blue Peter parrot—Joey, and one successor, Barney—featured in the 1960s, but when Barney, a blue-fronted amazon, died, he was not replaced.
 In a 1986 documentary shown on BBC2 as part of the Did You See...?
 series, former presenter Peter Purves recalled that Biddy Baxter, the show's editor, had called him in floods of tears the day the first parrot Joey died.
 He went on to muse in the same interview that had he himself died, Baxter would have been far less upset.
 The original ideas behind featuring the programme's pets were to teach viewers who had animals of their own how to look after them, and for the creatures to act as surrogate pets for those that did not own any.
 For example, dog training items, tortoise hibernation, and cat care are often featured on the programme; however, the keeping of rabbits and mice was deemed not suitable as they do not live long.
 In addition, dogs that lived with the presenters often accompanied them on filming assignments.
Best Ed is a Canadian animated television series created by Rick Marshall.
 The series chronicles the adventures of an excessively helpful and enthusiastic dog named Ed and his best friend, Doug the squirrel, whom everyone calls "Buddy" because Ed refers to him as best buddy.
 They live in their fictional hometown of Swellville.
 Best Ed is produced by 9 Story Entertainment and animated using Adobe Flash software.
Fetch!
 with Ruff Ruffman, sometimes shortened as Fetch!
, is an American animated television series that was on PBS Kids.
 It is a reality-game show that is hosted by an animated anthropomorphic dog named Ruff Ruffman who dispenses challenges to the show's real-life contestants.
 Ruff Ruffman appears to be a Labrador Retriever.
 The series ran for five seasons and 100 episodes from May 29, 2006, to November 4, 2010, on PBS, with 30 contestants in that time.
 In June 2010, WGBH announced that the series would end due to lack of funding.
 In June 2008, the series received its first Emmy for Best Original Song for its theme.
The Beatles is an American animated television series featuring representations of the popular English rock band of the same name.
 It ran from 1965 to 1969 on ABC in the U.S. (only 1965 to 1967 was first run; later transmissions were reruns).
 The series debuted on September 25, 1965 and ended on September 7, 1969.
 A total of 39 episodes were produced.
 The series was shown on Saturday mornings at 10:30 AM EST until the 1967 third season when it was moved to 12:00 PM EST.
 For the fourth season, which consisted of reruns, the series was shown at 9:30 AM EST on Sunday mornings.
 Each episode has a name of a Beatles song, so the story is based on its lyrics and it is also played at some time in the episode.
 The original series was rebroadcast in syndication by MTV in 1986 and 1987 and on the Disney Channel beginning in 1989 on Fridays at 5 PM.
 The series was a historical milestone as the first weekly television series to feature animated versions of real, living people.
Blue's Clues is an American live-action/animated children's television series that premiered on Nickelodeon on Sunday, September 8, 1996.
 Producers Angela Santomero, Todd Kessler, and Traci Paige Johnson combined concepts from child development and early-childhood education with innovative animation and production techniques that helped their viewers learn.
 It was hosted originally by Steve Burns, who left in 2002 and was replaced by Donovan Patton.
 The show follows an animated blue-spotted dog named Blue as she leaves a treasure hunt for the host and the viewers.
 "Blue's Clues" became the highest-rated show for preschoolers on American commercial television and was critical to Nickelodeon's growth.
 It has been called "one of the most successful, critically acclaimed, and ground-breaking preschool television series of all time."
 A spin-off called "Blue's Room" premiered in 2004.
Martha Speaks is an American-Canadian children's educational animated television series based on the 1992 children's book of the same name by Susan Meddaugh, about a talking dog named Martha (voiced by Tabitha St. Germain), who is owned by ten-year-old Helen Lorraine (known in the books as Helen Finney).
 When Helen feeds Martha some alphabet soup, the soup travels to her brain instead of her stomach, resulting in her ability to speak.
 The show focuses on synonyms and vocabulary, with each episode featuring an underlying theme illustrated with keywords.
 The show takes place in the fictional town of Wagstaff City, a parody of Flagstaff, Arizona.
Daniel R. Anderson (born 1944) is an American psychologist and a professor emeritus at the University of Massachusetts Amherst.
 Anderson specializes in developmental psychology and was involved in the creation of children's television series including "Allegra's Window", "Gullah Gullah Island", "Bear in the Big Blue House", "Blue's Clues", and "Dora the Explorer".
 He has also acted as an advisor to "Captain Kangaroo", "The Wubbulous World of Dr. Seuss", "Sesame Street", "Fimbles", "Go, Diego, Go!
", "It's a Big Big World", "Peep and the Big Wide World" and "The WotWots".
Lassie is an American television series that follows the adventures of a female Rough Collie dog named Lassie and her companions, both human and animal.
 The show was the creation of producer Robert Maxwell and animal trainer Rudd Weatherwax and was televised from September 12, 1954, to March 25, 1973.
 The fourth longest-running U.S. primetime television series after "The Simpsons", "Gunsmoke", and "Law & Order", the show chalked up 17 seasons on CBS before entering first-run syndication for its final two seasons.
 Initially filmed in black and white, the show transitioned to color in 1965.
Fever of the Bone is a novel written by noted Scottish crime author Val McDermid.
 It was published by Little, Brown in Great Britain (2009) and HarperCollins for the United States and Canada (2010), and is the sixth novel in the series featuring psychologist Dr. Tony Hill and Detective Chief Inspector Carol Jordan.
 Several of the books in this series have been adapted into the television series "Wire in the Blood", starring Robson Green as Tony Hill and Hermione Norris as Carol Jordan.
Poochini's Yard (a.k.a. Poochini) is an animated children's television series which originally aired globally in 2000, but was not shown in the United States for the first time until September 1, 2002.
 The series follows the life of a dog named Poochini who runs away from home after his rich owner dies, gets captured by the dog pound and is adopted by an average American family.

Question: Which psychologist was involved in the creation of a children's television series featuring an animated blu-spotted dog named Blue?
Answer: Daniel R. Anderson