Abstract: A pet litter scoop assembly and a litter sieve are related, the pet litter scoop assembly including the litter sieve for collecting used litter. The litter sieve includes a base part and a handle extending from the base part, the base part including a bottom wall and a sidewall extending upwardly from the bottom wall, with a sieving cavity formed by the sidewall and the bottom wall, the handle connected to the sidewall. The litter sieve includes holes penetrating the bottom wall and sized such that the used litter cannot pass through the holes, and at least one guiding rib(s) protruding from the bottom wall to the sieving cavity and positioned adjacent to the holes to guide unused litter pellets in the sieving cavity to pass through the holes. The litter sieve and litter scoop assembly can help to avoid blocking of the holes.

Abstract: An animal feeding apparatus is related, including a base and a reservoir connected to the base, the medium in the reservoir is driven into or out of the reservoir through a port of the reservoir. The base includes a first cavity communicating with the reservoir, and a second cavity adjacent to and communicating with the first cavity. A piston is movable positioned in the first cavity, and having a first force end away from the reservoir. An activator is movable positioned in the second cavity, and having a second force end away from the reservoir. An linkage member is formed between the first cavity and the second cavity, and engages with the piston and the activator and guide the piston and the activator to move in two opposite directions to get the medium to move into or out of the reservoir. An animal feeding method is also related.