Litter Composition and Maternal Effects in Two Breeds of Domestic Dogs

Data is from the Finnish Kennel Club (public data). The variables include: breed, generation, number of males and females within the litter, and the number of female/ male siblings that both parents have. Codes: Breed (1 = Russian Toy, 2 = Manchester Terrier) Generation: 1, 2, 3, 4 Litter Females: Number of females within the litter Litter Males: Number of males within the litter Mother Sisters: Number of females within the mother's litter Mother's Brothers: Number of males within the mother's litter Father's Sisters: Number of females within the father's litter Father's Brothers: Number of males within the father's litter