Children explore the world using all of their senses (including taste!), so your son’s behavior is normal and is something that he will outgrow over time (although some children take longer than others).
Every baby is different, as are their teething timelines. Some babies are born with teeth, while others don’t experience any tooth eruption for the duration of their first year. In spite of the fluctuations, however, a loose pattern does exist: many babies welcome their first tooth at around six months of age. The middle bottom teeth, ...