It shall be unlawful and it is hereby declared to be a nuisance for any person to keep or maintain any swine, cattle, horses, or other livestock within the limits of the city.
(Prior code § 3-13; Code 1959 § 3.4)
The term "wild animal" shall be construed to mean and include any animal, reptile or fowl which is not naturally tame or gentle but is of a wild nature or disposition or which is known to be vicious and which must be kept in confinement to be brought within the immediate power of the owner, or which is venomous to human beings whether its venom is transmitted by bite, sting, touch, or other means.
(Prior code § 3-14.01; Ord. 513-75, 3-10-1975)
It shall be unlawful for any person to keep or maintain, or cause to be kept or maintained, within the city of Willows any wild animal as described in WMC § 6.05.150, except as follows:
(1) 
Wild Animals in Zoos or Museums. Any wild animals which are kept confined in zoos, museums, or any place where they are kept as live specimens for the public to view.
(2) 
Wild Animals in Circuses, Carnivals, Exhibits or Shows. Any wild animals which are kept and confined and placed on exhibit in a circus, carnival, or any type of exhibit or show.
(3) 
Wild animals in bona fide, licensed veterinary hospitals for treatment.
(4) 
Any nonvenomous, nondangerous wild animal under the weight of three pounds, provided such animal is properly confined and cared for in a manner satisfactory to the chief of police.
Dangerous or poisonous reptiles may be maintained by bona fide education institutions for the purpose of instruction, provided such reptiles are securely confined and are properly cared for in a manner satisfactory to the chief of police.
(Prior code § 3-14; Ord. 513-75, 3-10-1975)
The keeping or harboring of any dog, cat or other animal or fowl, whether licensed or not, which by habitual howling, yelping, barking or other noise disturbs or annoys any considerable number of persons or the neighborhood is unlawful, is declared to be a public nuisance, and each day shall constitute a separate offense.
(Prior code § 3-15; Code 1959 § 3.37)
It shall be unlawful to suffer or permit any animal to trespass on private or public property so as to damage or destroy any property or thing of value and the same is declared to be a nuisance and any such animal may be impounded. Whenever it shall be affirmed in writing by three or more persons having separate residences, or regularly employed in the neighborhood, that any animal is an habitual nuisance by reason of trespassing, howling, barking or other noises, or damage to property, or being vicious or by its actions potentially vicious or in any other manner causing undue annoyance, the poundmaster, if he finds such nuisance to exist, shall serve notice upon the owner or custodian that such nuisance must be abated.
(Prior code § 3-16; Code 1959 § 3.38)