Mars brand dry cat and dog food is being
recalled due to salmonella contamination. Their products include Pedigree, Pet Pride, Red Flannel, and Wegman's cat and dog foods. If you have any of the contaminated batches, THROW IT OUT. Canned should be safe since the canning process sterilizes it.
I don't know how susceptible cats and dogs are to it, but both humans and
birds can get salmonella, so check your cat/dog food if you have those animals.
If you don't have contaminated batches, it doesn't hurt to wash your hands lots, just like if you were handling raw chicken. Freezing does NOT kill salmonella - you still have to cook chicken after freezing it.
Sources:
Mars Petcare recall pageCDC pageCBS News / WebMD article X-posted lots