That depends on the contents and type of can. Food with high a high percentage of water (e. g. soup) will expand when freezing. Cans will most certainly bulge (that´ll happen even when the can is open). Cans with a pull ring may burst there. Other cans - especially if they have air pockets - may survive. Food with a low percentage of water (e. g. canned tuna in olive oil) will not expand enough to do damage. Regards of that the freeze/thaw cycles may degrade the food. The solution would be freeze dried food or burrying deeper (which would be a good idea anyway.
Animals might find the food in the cache by it´s smell. That is why geocaches are not supposed to have food items in them.
It may not be obvious but the camouflage on this cache was not done very well. Branches do not naturally fall the way they were placed and geocachers sometimes place branches in that way to clearly mark the location of the cache. In German speaking countries this arrangement is called "Hasengrill".