Sawtoothed Grain Beetle:

The sawtoothed grain beetle (Oryzaephilus surinamensis) is a slender, flattened insect about 1/8 inch long with a reddish-brown body and six distinctive saw-like teeth along its thorax edges. Closely related to the merchant grain beetle, it feeds on broken grains, dry pet food, birdseed, and other stored products but cannot penetrate whole grains. These beetles often enter homes in large numbers, especially where rodents have stored food in wall voids. Notorious climbers, they can scale smooth surfaces, making control difficult. A female can lay up to 250 eggs in cracks near food sources. Their lifespan is 6 to 10 months. Sawtoothed grain beetles are common pantry pests that contaminate food and multiply rapidly, requiring vigilant food storage and pest control to prevent infestations.