Though the show has already enjoyed 4 successful seasons on the air thus far, excitement is still high around the possibility of a fifth season of All Creatures Great and Small. Premiering in the UK on Channel 5, the series is based on the non-fiction books by veterinarian James Alfred Wight as he recounts his years as an animal surgeon starting back in the 1930s. Packed with heartwarming stories and fun characters, the ongoing show has expertly captured the soul of the books that made them bestsellers for so many years.