(new window)Canada pushed back, and on Tuesday the CDC updated its policy by creating three categories of rules (new window) dog owners must follow when bringing a dog into the United States. and travels across the border every few months to visit his son, daughter-in-law and grandchildren in Seattle. The CDC rules published online this week do not mention the grace period. Photo: Reuters / Rebecca CookThe new rules also require dog owners to fill out an online form (new window) and present a digital or paper receipt to border control officers when crossing. While Canadian dog owners are in a better position than they were last week, Arthur said he wishes he knew what the reality will be months down the road.