The ornamental design for an animalbed, as shown and described.
FIG. 1 is a top perspective view of an animal bed showing my new design;
FIG. 2 is a bottom perspective view thereof;
FIG. 3 is a front elevation view thereof;
FIG. 4 is rear elevation view thereof;
FIG. 5 is left side elevation view thereof;
FIG. 6 is a rear right side elevation view thereof;
FIG. 7 a top plan view thereof; and,
FIG. 8 is a bottom plan view thereof.
The broken lines showing parts of the drawings are included for the purpose of illustrating use and environment and form no part of the claimed design.