People v. Williams, 15 Cal. App. 5th 111

On Oct. 29, 2014 Animal Control responded to a loose horse that led them to 7038 W. Ave A-14 (defendants' residence); the horse was thin and appeared to have escaped through broken corral boards.
Officers secured the horse in a trailer, attempted to contact the owners (knocking, calling), and while doing so heard dogs barking and whining and noted strong fecal odors.
Officer Callaway looked through a broken garage-window and observed a treadmill and a partially covered slat mill (a dog‑fighting training device); Sergeant Montez‑Kemp and Callaway then walked into the fenced back yard and viewed makeshift chain‑link kennels with pit bulls, some scarred or injured.
Photographs from Oct. 29 and an investigative drive‑by on Nov. 10 (observations from public roads) were used by Deputy Ferrell in an affidavit for a search warrant; warrant issued Nov. 24 and executed Nov. 26, yielding 19 pit bulls, training devices, dead animals, and documents.
Defendants moved to suppress and quash the warrant as fruit of an unlawful warrantless entry; the trial court denied the motion. Defendants pled no contest to one count each of possession of fighting dogs and animal cruelty; appeal followed.

Issue	Plaintiff's Argument	Defendant's Argument	Held
Was the officers' warrantless entry/inspection of the garage/back yard lawful?	Officers (People) contend exigent circumstances and plain‑view observations justified looking through window and briefly entering curtilage to check for animals in distress.	Williams/Winbush argue any emergency ended when the horse was secured, so further entry/inspection was unlawful and tainted subsequent warrant.	The court held officers reasonably acted under exigent‑circumstances and plain‑view; looking through window and briefly inspecting curtilage was justified.
Was the subsequent search warrant supported by probable cause if tainted observations are excised?	People argue Deputy Ferrell’s affidavit—based on his blood‑sport expertise, prior complaints, public‑view observations of individualized kennels, and discovery of a slat mill—independently established probable cause.	Defendants argue the affidavit relied on tainted information from the warrantless back‑yard observations and prior calls were stale.	The court held the affidavit—minus the contested back‑yard injury observations—contained sufficient, non‑stale information (expert interpretation + public observations) to support probable cause; warrant valid.

People v. Camacho, 23 Cal.4th 824 (principles of reviewing suppression rulings and expectation of privacy).
People v. Chavez, 161 Cal.App.4th 1493 (plain‑view observations from curtilage/public vantage and exigent‑circumstances entry to secure dangerous item).
United States v. Dunn, 480 U.S. 294 (factors to determine curtilage).
Mincey v. Arizona, 437 U.S. 385 (exigency limits—actions circumscribed by emergency).
People v. Carrington, 47 Cal.4th 145 (staleness analysis for information in affidavits).
People v. Scott, 52 Cal.4th 452 (presumption of validity for search‑warrant affidavits).
People v. Troyer, 51 Cal.4th 599 (reasonable mistake about exigency can justify warrantless action).
People v. Nicholls, 159 Cal.App.4th 703 (courts may credit law‑enforcement expertise in affidavits).
Broden v. Marin Humane Society, 70 Cal.App.4th 1212 (exigent‑circumstances exception when an animal is believed to need immediate aid).