Try the manufacturer first. They will do a much better repair job, and the charge will be a bargain for that.
If not that, maybe they will supply some of the same fabric to make the repair look good.
If not that, and assuming that is silnylon, Thru-Hiker's yellow is similar in color and of high quality.
After cleaning and drying all surfaces with first aid (91% Isopropyl) alcohol, use GE silicone glue to glue on silnylon strips the same way you did with the tape, but wider. Use plenty of glue, and a rubber roller - so you will need a good flat and hard surface (like a ping-pong table). Clamping is even better, but very few folks are willing to go to that trouble. (There is a recent post on adhesives on MYOG that describes clamping in detail). Clean off all the extra glue with the alcohol.
If that looks good to you after it dries (at least 72 hours), OK. If in doubt, you can sew large zig-zags on, keeping to the taped surfaces, like sailmakers do. The stitching will have to be resealed.
A dear departed shelty of mine used to let me know when she needed to leave the tent, and even figured out how to open the zipper on the net door with her nose (I swear). Mary is right about the crates. The shelty was crate trained, and couldn't wait to jump in the tent after it was set up. Shelties' claws never seem to be a problem on PU and sil-coated nylon floors, but they do get to the groomer for claw clipping at least every couple months. Consider leaving an opening in the canopy large enough for the dog to get in and out.
(Edited to correct type of alcohol)