a sea otter

cartoon-character costume, a full body costume, typically of an animal, complete with full head helmet mask hat

rate of advancement to the next educational level

personal, individual

positive, affirmative

sensing something that isn't there: one's imagination; part of one's imagination

strong enemy

deathday (anniversary of a person's death)

caption, a title or brief explanation attached to an illustration or photograph / caption, a descriptive title or heading on a document / subtitles, the textual versions of the dialog in films

friendly, amicable