Take action:
Have your pet spayed or neutered - that is unless you want to use the dog or cat for breeding purposes; take your dog for regular walks, as dogs need exercise just as much as people do; feed your animals at the same time every day and feed them healthy foods, recommended by your vet; make sure there is always fresh water for your animals; take your pet to the vet if it stops eating or loses weight; make sure that your pet gets all the injections and vaccinations it needs; deworm and deflea your pets regularly.
Read more on protecting yourself from these animal diseases.