Fig. 3

a A Venn plot of the shared OTUs among four cow groups with different frequency of tongue-rolling behaviour; b PCoA of phylum-level rumen microbiomes from four cow groups with different tongue-rolling frequency; c Top 15 abundant species at the phylum level; d Top 15 abundant species at the genus level. HT, cows with high tongue rolling frequency behaviour; MT, cows with medium tongue rolling frequency behaviour; LT, cows with low tongue rolling frequency behaviour; CON, cows without tongue rolling behaviour. * means P < 0.05