The ornamental design for a catclimbingtower, as shown and described.
FIG. 1 is a top perspective view of the first embodiment of a cat climbing tower;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a right side elevational view thereof, the left side elevational view being a mirror image of the side shown;
FIG. 4 is a back elevational view thereof;
FIG. 5 is a top perspective view of the second embodiment of a cat climbing tower;
FIG. 6 is a front elevational view of FIG. 5;
FIG. 7 is a right side elevational view of FIG. 5, the left side elevational view being a mirror image of the side shown; and,
FIG. 8 is a back elevational view of FIG. 5.
The broken lines on the top of the cat climbing tower are for illustration purposes only. Neither the broken lines nor the area inside the broken lines forms part of the claimed design.