Table 1. Characteristics of 375 community cats admitted to eight trap-neuter-return programs in Seoul.

	Total	2017				2018
		Feb	Sep	Oct	Nov	Feb	Mar	Sep	Oct
Intact females	192 (51.2%)	19 (44.2%)	11 (33.3%)	26 (59.1%)	19 (63.3%)	21 (50.0%)	36 (63.2%)	22 (51.2%)	38 (45.8%)
Intact males	180 (48.0%)	24 (55.8%)	22 (66.7%)	18 (40.9%)	11 (36.7%)	20 (47.6%)	21 (36.8%)	20 (46.5%)	44 (53.0%)
Previously sterilized	3 (0.8%)	0	0	0	0	1 (2.4%)	0	1 (2.3%)	1 (1.2%)
Pregnant females	42 (21.9%)	6 (31.6%)	2 (18.2%)	1 (3.8%)	0	7 (33.3%)	23 (63.9%)	3 (13.6%)	0
Foetuses per littera	4.4 ± 0.25	5.5 ± 1.4	4.0 ± 0.0	3.0 ± 0.0	0	4.6 ± 0.9	4.0 ± 1.7	5.3 ± 1.9	0
Nursing females	19 (9.9%)	0	2 (18.2%)	4 (15.4%)	2 (10.5%)	1 (4.8%)	0	7 (31.8%)	3 (7.9%)
Died	3 (0.8%)	0	0	1 (2.3%)	0	0	1 (1.8%)	1 (2.3%)	0

Notes.

^aMean ± standard deviation.