Table 4.

Causes of death classified by organ system in our data

Organ System	All Dogs	%	Purebreds	%	Mixed Breeds	%	Males	%	Females	%	Intact	%	Gonadectomized	%	Small	%	Medium	%	Large	%	Giant	%
cardiovascular	108	11.37	74	11.78	30	10.56	50	10.50	58	12.31	23	13.53	85	10.94	29	16.48	20	13.42	19	7.76	3	7.32
dermatologic	20	2.11	13	2.07	6	2.11	8	1.68	12	2.55	5	2.94	15	1.93	3	1.70	5	3.36	4	1.63	0	0.00
endocrine	28	2.95	20	3.18	7	2.46	15	3.15	13	2.76	3	1.76	25	3.22	7	3.98	5	3.36	6	2.45	0	0.00
gastrointestinal	90	9.47	64	10.19	22	7.75	48	10.08	42	8.92	21	12.35	69	8.88	14	7.95	15	10.07	28	11.43	5	12.20
hematopoietic	126	13.26	70	11.15	51	17.96	69	14.50	56	11.89	13	7.65	112	14.41	10	5.68	15	10.07	39	15.92	4	9.76
hepatic	57	6.00	40	6.37	13	4.58	31	6.51	26	5.52	5	2.94	52	6.69	16	9.09	8	5.37	13	5.31	0	0.00
musculoskeletal	142	14.95	86	13.69	54	19.01	66	13.87	74	15.71	25	14.71	115	14.80	8	4.55	12	8.05	55	22.45	11	26.83
neurologic	200	21.05	140	22.29	51	17.96	99	20.80	101	21.44	41	24.12	159	20.46	41	23.30	33	22.15	50	20.41	13	31.71
ophthalmologic	4	0.42	1	0.16	3	1.06	3	0.63	1	0.21	1	0.59	3	0.39	0	0.00	1	0.67	0	0.00	0	0.00
respiratory	92	9.68	59	9.39	26	9.15	48	10.08	44	9.34	18	10.59	74	9.52	23	13.07	16	10.74	17	6.94	3	7.32
urogenital	83	8.74	61	9.71	21	7.39	39	8.19	44	9.34	15	8.82	68	8.75	25	14.20	19	12.75	14	5.71	2	4.88
unclassified	585		366		193		293		287		102		478		118		92		130		23