Tooth color depends on hard tooth tissue structures, above all dentine, and is genetically determinated. Nutritive habits and nutrition patterns during the lifetime can influence the change of crystal structure of enamel and dentine and consequently tooth color. The purpose of this research is to determine the color of dog teeth and to compare it to human tooth color. Standardized color key was used, thus overcoming all three color parameters: main color - hue, satiate - chroma and brightness - value. The obtained results show that both colors of dog and human teeth belong to the same spectrum. Dog teeth more frequently have a darker color which can be connected to the fact that their teeth are more worn and consequently a more intensive diffusion process is undergoing due to the changes in crystal structure because of the newly formed bondings of organic molecules into the crystal structure of the enamel.Boja zuba zavisi od sastava tvrdih zubnih tkiva, pre svega dentina i genetski je određena. Obrazac ishrane i nutritivne navike mogu u toku života putem difuzije uticati na promenu kristalne strukture gleđi i dentina a posledično i na boju zuba. Cilj rada je utvrditi boju zuba pasa i uporediti je sa bojom zuba ljudi. Korišćen je standardizovan ključ za boje kojim je moguće obuhvatiti određivanje sva tri parametra boje: osnovnu boju - hue, zasićenost - chroma i svetlinu - value. Dobijeni rezultati pokazuju da boja zuba i pasa i ljudi u najvećem broju slučajeva pripada istom spektru. Kod pasa su zastupljenije tamnije nijanse, što se dovodi u vezu sa većom abradiranošću površina njihovih zuba i intenzivnijom difuzijom i promenama dimenzija kristalne rešetke zbog vezivanja organskih delova molekula u strukturi kristala gleđi
