2mm Natural Solid Round Leather Cord (50-Meters Roll) that is vegetable oil-tanned and non-toxic is an excellent and versatile material. Here's why: Natural leather cord at 2mm thickness is a versatile material with specific characteristics that make it suitable for both jewelry making and pet toys. Here's what you should know: Physical properties: 2mm diameter provides good strength while remaining flexible and easy to work with Vegetable tanned using natural tannins from tree bark, leaves, and fruits No chemical treatments or dyes, making it safe for animals to chew and handle Natural light tan/beige color that may vary slightly Smooth surface with slight natural grain texture For jewelry making: Perfect size for bracelets, necklaces, and anklets Can be braided or knotted easily Takes well to natural aging, developing an attractive patina Strong enough to hold beads and pendants Can be sealed with natural beeswax if desired For bird and animal toys: Safe for chewing and playing due to natural tanning process No toxic chemicals that could harm pets Durable enough to withstand pecking and moderate chewing Naturally textured surface provides enrichment Can be knotted into various shapes for different play experiences Care and maintenance: Clean with a slightly damp cloth if needed Store in a cool, dry place Will naturally darken and soften with use Can be conditioned with natural leather oils if desired