A module for dispensing treats to a chewing animal has a hollow treat holder that has at least one aperture through which a treat can be inserted by a person or removed by a chewing animal and at least one end that can be removably attached to an end of another of said modules. The treat holder preferably has two ends, a male end and a female end, where the said male end locks into the female end and there is a treat barrier recessed into the ends. The hollow treat holder may have a variety of shapes such as straight, triangular, U-shaped, spheroidal, cubic, and L-shaped. A single module can be used as a treat-dispensing toy or a number of modules can be assembled together to form a larger treat-dispensing toy.