The dog name "Abba" has several possible origins. One variant is that it is derived from the Hebrew word for "father", which gives the dog a dignified and respectful character. Another variant is that it is inspired by the famous Swedish pop group ABBA, which enjoyed worldwide success in the 1970s with hits such as"Dancing Queen" and"Mamma Mia". In this case, the dog would be rather cheerful and musically inclined. There is no official name day for the dog name "Abba", but you could celebrate it on April 6, for example, the birthday of Agnetha Fältskog, one of ABBA's singers. Or it could be celebrated on November 16, the International Day of Tolerance, to commemorate the diversity and peace that ABBA spread with their music.