In the growing tooth period gum is possible ache, then to affect her appetite and the sleep. 在长牙期间牙龈可能会疼痛,进而影响她的食欲和睡眠。
In the narwhal the single unicorn-like tusk is a modified upper tooth, whereas the paired tusks of the beaked whales are modified lower teeth. 雄性独角鲸的长牙状如独角兽的长角,而突吻鲸的一对獠牙却短小的多。