Corpus statistics

Dogs	301 015
With both parents	291 449
Kennels	24 241
People	7 038
Litters	63 255

By decade of birth

· 18 rows

The chart carries the whole corpus — 301 015 dogs. 276 922 dogs are placed by decade of birth, and another 24 093 dogs are gathered in a column of their own, “Year not recorded”, at the right past the span: 276 922 + 24 093 = 301 015. The horizontal axis carries all 18 decades, from the 1850s to the 2020s. A decade with no dog in it keeps its place on the scale. Here that is 1 decade. Every column carries its own number above it: next to the tallest the shortest are not visible, and a decade holding one dog differs from a decade holding none by that number, not by its height. The columns the shared scale cannot show are drawn again in magnified strips below it — at the same places on the axis, each stating its own upper bound: 1850s — 1, 1870s — 1, 1880s — 40, 1890s — 138, 1900s — 290, 1910s — 236.

2020s	23 297
2010s	40 685
2000s	59 092
1990s	82 463
1980s	28 620
1970s	16 581
1960s	5 363
1950s	2 495
1940s	13 054
1930s	3 481
1920s	1 085
1910s	236
1900s	290
1890s	138
1880s	40
1870s	1
1850s	1
Year not recorded	24 093
Total	301 015

Dogs and bitches by year of birth

· 148 rows

The chart carries 276 922 dogs — every dog whose year of birth is recorded. Another 24 093 dogs have no year of birth: there is no place for them on a year axis, and they are gathered in the “Year not recorded” row of the table below — 276 922 + 24 093 = 301 015. The horizontal axis carries all 170 calendar years from 1857 to 2026. A year with no dog in it keeps its place on the scale: there are 23 of those here. A series indistinguishable from zero at the shared scale is drawn again in a strip of its own, with its own upper bound: Sex not recorded — 9. Its line is real, not empty.

Year	Dogs	Bitches	Sex not recorded	Total
2026	42	43	0	85
2025	891	862	0	1 753
2024	1 617	1 622	0	3 239
2023	2 012	2 023	0	4 035
2022	2 083	1 955	0	4 038
2021	2 896	2 801	3	5 700
2020	2 292	2 152	3	4 447
2019	1 829	1 951	1	3 781
2018	1 895	1 851	0	3 746
2017	2 085	1 997	1	4 083
2016	1 924	1 959	0	3 883
2015	1 848	1 919	0	3 767
2014	1 848	1 874	0	3 722
2013	1 925	1 952	0	3 877
2012	2 109	2 038	0	4 147
2011	2 391	2 376	0	4 767
2010	2 440	2 472	0	4 912
2009	2 425	2 463	0	4 888
2008	2 543	2 636	0	5 179
2007	2 572	2 696	0	5 268
2006	2 844	2 947	0	5 791
2005	2 787	2 951	0	5 738
2004	3 085	3 042	0	6 127
2003	3 115	3 006	0	6 121
2002	3 067	3 153	0	6 220
2001	3 351	3 404	1	6 756
2000	3 434	3 570	0	7 004
1999	3 673	3 647	0	7 320
1998	4 170	4 131	0	8 301
1997	5 942	5 794	0	11 736
1996	6 141	5 946	0	12 087
1995	5 660	5 641	0	11 301
1994	4 252	4 154	0	8 406
1993	3 708	3 822	0	7 530
1992	3 090	3 231	0	6 321
1991	2 726	2 667	0	5 393
1990	1 975	2 093	0	4 068
1989	1 727	1 900	0	3 627
1988	1 829	1 884	0	3 713
1987	1 567	1 660	0	3 227
1986	1 465	1 548	0	3 013
1985	1 425	1 464	0	2 889
1984	1 386	1 473	0	2 859
1983	1 268	1 283	0	2 551
1982	1 139	1 188	0	2 327
1981	1 219	1 239	0	2 458
1980	929	1 027	0	1 956
1979	987	927	0	1 914
1978	1 010	1 030	0	2 040
1977	905	878	0	1 783
1976	1 021	868	0	1 889
1975	899	840	0	1 739
1974	877	920	0	1 797
1973	884	859	0	1 743
1972	702	713	0	1 415
1971	597	672	0	1 269
1970	509	483	0	992
1969	529	486	0	1 015
1968	362	464	0	826
1967	309	316	0	625
1966	350	306	0	656
1965	233	246	0	479
1964	235	257	0	492
1963	192	161	0	353
1962	192	191	0	383
1961	117	140	0	257
1960	126	151	0	277
1959	106	126	0	232
1958	129	115	0	244
1957	85	84	0	169
1956	119	118	0	237
1955	91	104	0	195
1954	125	129	0	254
1953	107	95	0	202
1952	182	130	0	312
1951	147	120	0	267
1950	210	173	0	383
1949	874	742	0	1 616
1948	1 113	950	0	2 063
1947	1 027	1 022	0	2 049
1946	944	951	0	1 895
1945	676	623	0	1 299
1944	572	568	0	1 140
1943	364	313	0	677
1942	412	373	0	785
1941	412	371	0	783
1940	414	333	0	747
1939	345	285	0	630
1938	321	278	0	599
1937	248	241	0	489
1936	219	164	0	383
1935	146	141	0	287
1934	158	138	0	296
1933	138	116	0	254
1932	108	90	0	198
1931	103	95	0	198
1930	68	79	0	147
1929	98	73	0	171
1928	80	96	0	176
1927	105	74	0	179
1926	80	74	0	154
1925	60	55	0	115
1924	61	37	0	98
1923	38	45	0	83
1922	28	23	0	51
1921	18	21	0	39
1920	10	9	0	19
1919	2	11	0	13
1918	3	0	0	3
1917	4	11	0	15
1916	11	13	0	24
1915	21	16	0	37
1914	18	15	0	33
1913	20	10	0	30
1912	19	14	0	33
1911	15	11	0	26
1910	16	6	0	22
1909	29	13	0	42
1908	20	6	0	26
1907	20	18	0	38
1906	20	13	0	33
1905	16	17	0	33
1904	18	12	0	30
1903	20	22	0	42
1902	8	3	0	11
1901	14	5	0	19
1900	7	9	0	16
1899	13	6	0	19
1898	8	6	0	14
1897	15	6	0	21
1896	7	5	0	12
1895	4	6	0	10
1894	13	7	0	20
1893	2	6	0	8
1892	6	8	0	14
1891	5	5	0	10
1890	7	3	0	10
1889	3	6	0	9
1888	6	4	0	10
1887	5	6	0	11
1886	2	2	0	4
1885	0	2	0	2
1883	0	1	0	1
1882	2	0	0	2
1881	0	1	0	1
1877	1	0	0	1
1857	0	1	0	1
Year not recorded	8 947	15 140	6	24 093
Total	147 565	153 435	15	301 015

Years in the table: 147 of 170, spanning 1857–2026. A year with no dog in the corpus gets no row. 24 093 dogs have no date of birth and fall into no year: they are gathered in the “Year not recorded” row, and with it the table reconciles with the number of dogs in the corpus. A year named approximately (“circa 1993”) stands in the 1993 column — the same reading sorting and filtering give it. Records with an approximate year of birth here: 0.

Colours by year of birth

· 148 rows

The chart carries 276 922 dogs — every dog whose year of birth is recorded. Another 24 093 dogs have no year of birth: there is no place for them on a year axis, and they are gathered in the “Year not recorded” row of the table below — 276 922 + 24 093 = 301 015. The horizontal axis carries all 170 calendar years from 1857 to 2026. A year with no dog in it keeps its place on the scale: there are 23 of those here. A series indistinguishable from zero at the shared scale is drawn again in a strip of its own, with its own upper bound: Lemon — 177. Its line is real, not empty. The lines carry their own colour. Lemon is darkened: true lemon is invisible on a white ground.

Year	Black	Liver	Lemon	Colour not recorded	Total
2026	61	24	0	0	85
2025	1 286	439	2	26	1 753
2024	2 377	809	0	53	3 239
2023	2 992	961	7	75	4 035
2022	2 807	1 105	6	120	4 038
2021	4 015	1 503	10	172	5 700
2020	3 141	1 128	8	170	4 447
2019	2 732	958	7	84	3 781
2018	2 725	919	3	99	3 746
2017	2 887	1 077	1	118	4 083
2016	2 793	972	4	114	3 883
2015	2 789	896	0	82	3 767
2014	2 677	951	10	84	3 722
2013	2 776	1 025	2	74	3 877
2012	3 083	986	3	75	4 147
2011	3 520	1 172	0	75	4 767
2010	3 496	1 330	4	82	4 912
2009	3 447	1 304	0	137	4 888
2008	3 789	1 277	0	113	5 179
2007	3 880	1 282	1	105	5 268
2006	4 323	1 338	2	128	5 791
2005	4 172	1 438	3	125	5 738
2004	4 586	1 337	3	201	6 127
2003	4 742	1 290	0	89	6 121
2002	4 821	1 274	4	121	6 220
2001	5 285	1 364	4	103	6 756
2000	5 531	1 355	0	118	7 004
1999	5 871	1 308	0	141	7 320
1998	6 710	1 504	8	79	8 301
1997	9 673	1 877	3	183	11 736
1996	9 958	2 007	0	122	12 087
1995	9 284	1 901	15	101	11 301
1994	6 213	1 663	26	504	8 406
1993	5 549	1 526	1	454	7 530
1992	4 703	1 235	0	383	6 321
1991	3 977	1 058	0	358	5 393
1990	2 912	865	1	290	4 068
1989	2 601	779	0	247	3 627
1988	2 789	713	0	211	3 713
1987	2 443	632	0	152	3 227
1986	2 257	540	0	216	3 013
1985	2 087	506	0	296	2 889
1984	2 081	493	0	285	2 859
1983	1 909	407	0	235	2 551
1982	1 664	378	7	278	2 327
1981	1 838	388	2	230	2 458
1980	1 489	298	4	165	1 956
1979	1 470	272	2	170	1 914
1978	1 570	228	7	235	2 040
1977	1 338	194	2	249	1 783
1976	1 354	239	2	294	1 889
1975	1 347	194	3	195	1 739
1974	1 370	193	1	233	1 797
1973	1 304	264	3	172	1 743
1972	1 078	191	3	143	1 415
1971	924	135	2	208	1 269
1970	690	148	0	154	992
1969	594	132	0	289	1 015
1968	574	113	1	138	826
1967	426	100	0	99	625
1966	467	104	0	85	656
1965	340	60	0	79	479
1964	337	70	0	85	492
1963	233	59	0	61	353
1962	263	34	0	86	383
1961	160	43	0	54	257
1960	182	27	0	68	277
1959	128	50	0	54	232
1958	153	66	0	25	244
1957	108	17	0	44	169
1956	146	47	0	44	237
1955	134	31	0	30	195
1954	145	52	0	57	254
1953	144	36	0	22	202
1952	208	57	0	47	312
1951	180	47	0	40	267
1950	257	67	0	59	383
1949	1 461	103	0	52	1 616
1948	1 909	107	0	47	2 063
1947	1 872	101	0	76	2 049
1946	1 776	86	0	33	1 895
1945	1 232	30	0	37	1 299
1944	1 058	63	0	19	1 140
1943	595	56	0	26	677
1942	712	51	0	22	785
1941	719	54	0	10	783
1940	701	40	0	6	747
1939	604	15	0	11	630
1938	566	8	0	25	599
1937	419	24	0	46	489
1936	314	20	0	49	383
1935	227	11	0	49	287
1934	229	20	0	47	296
1933	185	15	0	54	254
1932	145	5	0	48	198
1931	145	9	0	44	198
1930	111	5	0	31	147
1929	123	5	0	43	171
1928	107	4	0	65	176
1927	92	5	0	82	179
1926	85	1	0	68	154
1925	29	0	0	86	115
1924	17	1	0	80	98
1923	13	1	0	69	83
1922	6	0	0	45	51
1921	5	0	0	34	39
1920	4	0	0	15	19
1919	9	0	0	4	13
1918	2	0	0	1	3
1917	13	0	0	2	15
1916	21	0	0	3	24
1915	34	0	0	3	37
1914	15	1	0	17	33
1913	21	0	0	9	30
1912	15	2	0	16	33
1911	17	1	0	8	26
1910	10	1	0	11	22
1909	24	1	0	17	42
1908	14	2	0	10	26
1907	16	0	0	22	38
1906	19	0	0	14	33
1905	19	0	0	14	33
1904	16	4	0	10	30
1903	13	0	0	29	42
1902	5	0	0	6	11
1901	5	0	0	14	19
1900	4	0	0	12	16
1899	1	0	0	18	19
1898	1	0	0	13	14
1897	1	0	0	20	21
1896	1	0	0	11	12
1895	0	0	0	10	10
1894	0	0	0	20	20
1893	1	1	0	6	8
1892	4	1	0	9	14
1891	4	0	0	6	10
1890	6	0	0	4	10
1889	5	0	0	4	9
1888	6	0	0	4	10
1887	5	3	0	3	11
1886	3	0	0	1	4
1885	2	0	0	0	2
1883	0	0	0	1	1
1882	0	0	0	2	2
1881	1	0	0	0	1
1877	1	0	0	0	1
1857	1	0	0	0	1
Year not recorded	4 035	885	0	19 173	24 093
Total	214 196	54 604	177	32 038	301 015

A dog may have more than one colour recorded; in this table it is counted once, under its primary colour.

Distribution of the coefficient of inbreeding

· 8 rows

The whole corpus is on the chart — 301 015 dogs: 34 200 dogs whose coefficient is exactly 0 and 266 815 dogs above zero, 34 200 + 266 815 = 301 015. “Exactly 0” is not the lowest band but a different statement: not one common ancestor anywhere in the recorded pedigree. So its column stands to the left of a break and on ground of its own, and it takes a row of its own in the table. The smallest coefficient above zero in this corpus prints as < 0.01% — it does not look like a nought, and it must not. The highest coefficient in this corpus is 71.39%. Every column carries its own number above it: next to the tallest the shortest are not visible, and a band holding one dog differs from an empty one by that number, not by its height. The columns the shared scale cannot show are drawn again in magnified strips below it — at the same places on the axis, each stating its own upper bound: 50% and above — 33.

Exactly 0	34 200
below 1.5625%	7 515
1.5625–3.125%	13 597
3.125–6.25%	53 075
6.25–12.5%	128 505
12.5–25%	56 748
25–50%	7 342
50% and above	33
Total	301 015

The band edges are powers of one half, which is what a coefficient is summed from, and each of them names a mating. 6.25% is what first cousins give, 12.5% half-siblings, an uncle with a niece or a grandsire with a granddaughter, 25% full siblings or a parent with its own offspring, and 50% that mating repeated generation after generation. 1 179 dogs sit exactly on an edge, and next to nobody sits on a round percentage — which is why the edges are these. An edge reads this way: a dog whose coefficient is exactly 25% goes into the band that BEGINS at 25%, not into the one that ends there. Computed over the whole pedigree, with no generation limit. Other databases usually quote a coefficient over N generations — that is a different number and the two are not directly comparable.