Table 2. The 26 most abundant operational taxonomic units (OTUs) in canine plaque from dogs with healthy gingiva, gingivitis and mild periodontitis.

OTU	Species	Percentage identity	Total number of sequence reads	Proportion of total sequence reads (%)
2517	Porphyromonas cangingivalis COT-109	99.4	230327	7.40%
4266	Moraxella sp. COT-396	98.9	107867	3.47%
6029	Actinomyces canis COT-409	99.1	100436	3.23%
2232	Bergeyella zoohelcum COT-186	99.1	87570	2.81%
6027	Peptostreptococcus sp. COT-033	99.7	74661	2.40%
5570	Peptostreptococcaceae sp. COT-004	100.0	65764	2.11%
2678	Porphyromonas gulae COT-052	100.0	64382	2.07%
5364	Porphyromonas gingivicanis COT-022	99.7	63838	2.05%
2908	Filifactor villosus COT-031	100.0	60684	1.95%
2905	Actinomyces sp. COT-083	100.0	60238	1.94%
3307	Actinomyces sp. COT-252	100.0	56776	1.83%
2233	Neisseria shayeganii COT-090	100.0	52354	1.68%
5572	Fusobacterium sp. COT-189	99.1	50612	1.63%
3434	Porphyromonas canoris COT-108	100.0	47457	1.53%
3638	Porphyromonas gulae COT-052	99.7	46699	1.50%
2576	Corynebacterium freiburgense COT-403	99.7	41549	1.34%
2463	Peptostreptococcaceae sp. COT-077	100.0	39940	1.28%
1916	Clostridiales sp. COT-028	100.0	39516	1.27%
4116	Fusobacterium sp. COT-169	99.4	39001	1.25%
1678	Pasteurellaceae sp. COT-080	100.0	37073	1.19%
4929	Capnocytophaga sp. COT-339	100.0	36692	1.18%
5804	Erysipelotrichaceae sp. COT-311	100.0	31319	1.01%
368	Peptostreptococcaceae sp. COT-135	100.0	31151	1.00%
6025	Lachnospiraceae sp. COT-036	100.0	29757	0.96%
1773	Moraxella sp. COT-018	100.0	27348	0.88%
5514	Capnocytophaga cynodegmi COT-254	100.0	26402	0.85%