US Patent 10888068 Adjustable hollow food-leaking toy

Provided is an adjustable hollow food-leaking toy. The adjustable hollow food-leaking toy includes a housing and an inner container; the inner container is a hollow shell made of a hard material; a food eaten by a pet is accommodated in the inner container; a window configured to leak the pet food is formed on the sidewall of the inner container; the window can be switched between a sealed state and a non-sealed state. The housing is a hollow shell; the inner container is held in the housing; a space for moving the pet food is provided between the housing and the inner container; and multiple food-leaking holes for leaking the pet food are formed on the sidewall of the housing.