Abstract: A violation checking method includes generating a violation log report for a design, classifying violation logs in the violation log report into high-risk logs and low-risk logs by a machine learning model, reviewing the high-risk logs, and modifying the design if at least one bug is identified in the high-risk logs.

Abstract: A chew toy for pets can be produced as a combination of different materials, preferably with a rigid shell and softer chew portions extending from the shell. The shell can have multiple parts that join together to encase a mounting structure or frame, which can include threaded portions that connect to the chew portions. The shell can also include apertures through which the chew portion can protrude. The chew portion can include a plurality of projections extending outward from the base. The rigidity of the shell can provide structure, protect the internal structure, and provide extra support for the chew portions, whereas the softer chew portions can provide beneficial effects to a pet's teeth or gums or provide greater chewing pleasure. A scented insert can be housed within the shell and the scent can be emitted through passageways through the shell.