You are eligible for only a partial deduction on your Traditional IRA. Instead of contributing the nondeductible amount to a Traditional IRA, where earnings grow tax-deferred, you can contribute the amount to a Roth IRA where earnings grow tax-free. You are eligible for only a partial Roth-IRA contribution.
By about six weeks of age, the baby teeth are sufficiently painful to the mother's nipples to cause her to begin to wean the puppies from the nursing process. The first deciduous teeth to come in are the canine teeth and incisors, followed by the premolars and molars.
Tea is correct in that they start teething the day they are born, and with puppy teeth in full bloom at 4-6 weeks (and a mother that is screaming for them to stop) The conclusion of teething pretty well matches up with the onset of puberty 5-7 months.