Petco has launched its 2026 Halloween collection of costumes and accessories for pets across its U.S. stores and online platforms.

The rollout comes as retailers seek to capitalize on the growing consumer demand for animal-themed holiday apparel ahead of October. This seasonal push reflects a broader trend of "pet humanization," where owners treat animals as family members with their own holiday wardrobes.

The new collection consists of more than 300 seasonal products [1]. These items include hundreds of exclusive, on-trend finds designed for dogs, cats, and small pets [2]. Among the highlights of the 2026 lineup is a new grandma costume for pets [3].

Petco is positioning the drop to provide pet owners with festive options for the upcoming holiday season [1]. The variety of the collection aims to cover a wide range of pet sizes and preferences, ensuring that different breeds can participate in Halloween festivities.

While some reports describe the launch as featuring hundreds of exclusive finds [2], the company's specific product count is listed as 300-plus items [3]. This inventory is available for purchase immediately to allow owners time to prepare before the holiday peak.

The retailer continues to expand its seasonal offerings to maintain a competitive edge in the pet specialty market. By introducing specific themes like the grandma outfit, the company targets social-media-driven trends where unique pet costumes often go viral.

“The new collection consists of over 300 seasonal products.”

The early launch of a large-scale seasonal collection indicates that Petco is leveraging the 'pet humanization' trend to drive incremental revenue. By focusing on 'on-trend' and viral-ready costumes, the retailer is shifting from basic utility to lifestyle branding, targeting a demographic of pet owners who view holiday spending on animals as a priority.