Dehn v. Cosgrove CA3

CourtCalifornia Court of Appeal
DecidedApril 4, 2025
DocketC098877
StatusUnpublished

This text of Dehn v. Cosgrove CA3 (Dehn v. Cosgrove CA3) is published on Counsel Stack Legal Research, covering California Court of Appeal primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Dehn v. Cosgrove CA3, (Cal. Ct. App. 2025).

Opinion

Filed 4/4/25 Dehn v. Cosgrove CA3 NOT TO BE PUBLISHED California Rules of Court, rule 8.1115(a), prohibits courts and parties from citing or relying on opinions not certified for publication or ordered published, except as specified by rule 8.1115(b). This opinion has not been certified for publication or ordered published for purposes of rule 8.1115.

IN THE COURT OF APPEAL OF THE STATE OF CALIFORNIA THIRD APPELLATE DISTRICT (San Joaquin) ----

OLIVIA DEHN et al., C098877

Plaintiffs and Appellants, (Super. Ct. No. STKCVUPI20200009385) v.

MARIAN COSGROVE,

Defendant and Respondent.

After a dog attacked them, Olivia Dehn and her daughter Olivianna Dehn (together, appellants) sued three individuals—Marian Cosgrove, Shawndell Cosgrove1 (Marian’s daughter), and Kayla Higuera (Marian’s granddaughter). Appellants alleged that all three owned the dog and were liable for the dog’s conduct. Marian later moved for summary judgment. In her motion, she acknowledged that she owned the property where the attack occurred. But she presented evidence showing that she did not own the

1 Because some of the parties share the same surname, we will refer to them by their first names. No disrespect is intended.

1 dog, did not know the dog was being kept at the property, and lived on another property about 90 miles away. The trial court granted Marian’s motion and entered judgment in her favor. Seeking reversal, appellants raise three arguments on appeal. First, they argue that the trial court should have denied Marian’s motion because her evidence was not credible. Next, they argue that the trial court wrongly denied their request for a continuance to allow for further discovery. Lastly, they argue that the trial court wrongly excluded some of their evidence in opposition to Marian’s motion for summary judgment. We affirm. BACKGROUND Appellants sued Marian, Shawndell, and Higuera after a dog attacked appellants on a property Marian owned in Stockton (the Stockton property). Appellants alleged that in late 2018 the dog bit Olivianna and then bit Olivia when she tried to help, leaving Olivianna, who was then five years old, with multiple facial fractures and complex facial lacerations. Appellants further alleged that Marian, Shawndell, and Higuera together owned the dog. Appellants raised two causes of action. In the first, for strict liability, they asserted that Marian, Shawndell, and Higuera were all strictly liable for the dog’s actions. In the second, for negligence and premises liability, they asserted that Marian, Shawndell, and Higuera were all liable because of their negligent acts or omissions. As a part of appellants’ suit, the trial court appointed one of Marian’s daughters— Eve Monroe—as Marian’s guardian ad litem. It did so after finding Marian lacked legal capacity to make decisions. (See Code Civ. Proc., § 372, subd. (a).)2 Marian afterward generally denied the allegations in appellants’ complaint and then moved for summary

2 Undesignated statutory references are to the Code of Civil Procedure.

2 judgment. In her motion, she argued that she could not be held liable on a strict liability theory, because she was not the dog’s owner and, under Civil Code section 3342, strict liability only extends to a dog’s owner. She further argued that she could not be held liable on a negligence theory, because she did not know the dog was being kept at the Stockton property. In support of her summary judgment motion, Marian submitted declarations from three relatives—Monroe, Gwen Lumbre (another of Marian’s daughters), and Higuera. Monroe and Lumbre said Marian bought the Stockton property in 2009 for Shawndell to have a place to live. Monroe, Lumbre, and Higuera then said Marian was 83 years old, had dementia, and lived about 90 miles from the Stockton property. All three also said Higuera bought the dog in 2016, took the dog to a shelter on August 8, 2017, after struggling to find a place to keep it, and later retrieved the dog from the shelter and brought it to the Stockton property without Marian’s knowledge. All three further said, among other things, that Marian did not know Higuera kept the dog at the Stockton property and did not visit the Stockton property between August 8, 2017, and the date when the dog attacked appellants. Appellants opposed the motion. They argued Marian’s knowledge about the dog could not be resolved on summary judgment and challenged the credibility of Marian’s witnesses. Citing no supportive evidence, they further claimed Marian owned the dog. At the end of their brief, they argued that they presented sufficient facts to preclude summary judgment; but if the court disagreed and found inadequate facts to show Marian had notice of the dog’s vicious propensities, they asked the court to grant a continuance to allow further discovery on the topic, including to conduct depositions and to obtain records from San Jose Animal Care and Services about the dog’s violent history. Shortly after, appellants filed a supplemental declaration with records they obtained from San Jose Animal Care and Services. According to these records, the dog that attacked appellants was previously taken to an animal shelter on August 8, 2017,

3 because it bit another dog and the dog’s owner. The records state that Higuera owned the dog and told authorities that the dog had earlier bitten her arm (leaving a large scar) and another dog. The records also state that following the attack on August 8, 2017, Shawndell sought to collect the dog from the shelter. She purportedly claimed the dog as her own, said her sister and Marian surrendered the dog to the shelter following the attack, and said she planned to take the dog to the Stockton property. The records indicate that at the time of the attack, Higuera kept the dog at Marian’s home in Los Gatos—where Marian herself lived. The trial court granted Marian’s motion. At the start, it denied appellants’ request for a continuance, finding, among other things, that appellants failed to show “how additional discovery would change the outcome.” The court reasoned that even if appellants obtained records showing Marian knew the dog was dangerous, that would not “show that [Marian] knew the dog was being kept at her Stockton property.” The court then found appellants’ two causes of action failed as a matter of law. It found their first cause of action, based on strict liability, failed because the uncontradicted evidence showed that Marian did not own the dog. It further found their second cause of action, based on negligence and premises liability, failed because the uncontradicted evidence showed that Marian did not own the dog and did not know the dog was being kept at the Stockton property. The court acknowledged that appellants challenged the credibility of Marian’s witnesses, but it found that insufficient to defeat summary judgment. It afterward entered judgment in Marian’s favor. Appellants timely appealed. DISCUSSION I Witness Credibility Focusing first on their claim for negligence and premises liability, appellants challenge the trial court’s finding that Marian did not know the dog was being kept at the Stockton property. They contend a triable issue of material fact exists on this topic

4 because Marian’s witnesses—Monroe, Lumbre, and Higuera—all lacked credibility. We reject their argument, finding their challenge to the witnesses’ credibility insufficient to defeat summary judgment. We start with the general standards for summary judgment. A trial court may grant a motion for summary judgment “if all the papers submitted show that there is no triable issue as to any material fact and that the moving party is entitled to a judgment as a matter of law.” (§ 437c, subd.

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Bluebook (online)
Dehn v. Cosgrove CA3, Counsel Stack Legal Research, https://law.counselstack.com/opinion/dehn-v-cosgrove-ca3-calctapp-2025.