15 Amazing Facts About Wire Fox Terriers (Fox Terrier) You Probably Never Knew By Allen Abby - Fox Terriers like to eat and can become overweight. Be sure to monitor their food intake and give them regular exercise to keep them in shape. Fox Terriers can be hard to housetrain — crate training is recommended. Fox Terriers bark a lot and their barks typically are high-pitched. Please follow and like us: