The ornamental design for a cathouse for cats, as shown and described.
FIG. 1 is a perspective view of a cat house for cats embodying the new design;
FIG. 2 is a perspective view thereof, but viewed from another angle;
FIG. 3 is a left side elevation view thereof;
FIG. 4 is a right side elevation view thereof;
FIG. 5 is a front elevation view thereof;
FIG. 6 is a rear elevation view thereof;
FIG. 7 is a top plan view thereof;
FIG. 8 is a bottom plan view thereof;
FIG. 9 is a perspective view of a second embodiment of a cat house for cats embodying the new design; and,
FIG. 10 is a perspective view thereof, but viewed from another angle.
Broken lines are used to illustrate features of the cat house for cats which form no part of the claimed design.
It will be understood that the first and second embodiments are identical to one another and to the first embodiment with the exception of the disclaimed walls or panels of the cat house for cats, shown in broken lines.