The ornamental design for a collapsiblepetcarrier, as shown and described.
FIG. 1 is a front right perspective view of a collapsible pet carrier showing my new design;
FIG. 2 is a front view of the collapsible pet carrier of FIG. 1;
FIG. 3 is a back view of the collapsible pet carrier of FIG. 1;
FIG. 4 is a top view of the collapsible pet carrier of FIG. 1;
FIG. 5 is a bottom view of the collapsible pet carrier of FIG. 1;
FIG. 6 is a right view of the collapsible pet carrier of FIG. 1;
FIG. 7 is a left view of the collapsible pet carrier of FIG. 1.
FIG. 8 is a bottom back perspective view of the collapsible pet carrier of FIG. 1 in a partially collapsed position; and,
FIG. 9 is a top right perspective view of the collapsible pet carrier of FIG. 1 in a completely collapsed position.
Shading is provided to show contour and not surface ornamentation. The broken lines portions are for illustrative purposes only and form no part of the claimed design.