Notochord, a flexible supporting rod along the back of an animal. It is present in all chordate animals at some stage in their development. A primitive chordate retains it throughout life. In higher vertebrate animals, the notochord is replaced before birth by a backbone.
If the animal world were school, otters would be those kids who never leave the playground. Always begging for five more minutes of recess, otters take playtime very seriously.
Plan ahead to find pet-friendly hotels that will suit the needs of your pet and double check all the facts before leaving home. Take this quiz to learn more about pet friendly hotels.