Presenting the ‘Ultimate Challenge Level – 4’. Tiring and vast would definitely describe this mat. If you are looking for a mat that is going to keep your pooch occupied for a long time – this is it ! And for that extra kick, dont forget to hide treats in the fleece rolls. Mammoth® SnakeBiter® toys are made from premium quality poly-cotton yarns ideal for interactive playing, tossing, and tugging. SnakeBiter® dog toys encourage playtime and bonding between you and your pet while helping to maintain good dental hygiene.