how old do adult incisors come in as puppy
Cats have one upper and lower molar on each side. The primary or deciduous incisors erupt at one to three weeks of age while the primary canines erupt at three to four weeks. The remaining temporary premolars and molars should emerge by ten weeks. The first premolar and all the molars erupt only as adult teeth. The remaining premolars, canines, and incisors appear in the oral cavity first as primary (temporary, deciduous, or baby) teeth. Secondary (adult) teeth usually appear at four months. Adult incisors appear first followed by canines, premolars, and molars.