Arlene

Arlene: 

1) Garfield's on-and-off girlfriend. 

2) A thin pink cat who seems to be the one living thing in the world who can successfully crack jokes at Garfield on a regular basis. 

3) She has distinctively big lips and a very thin neck. 

4) Earlier in the series she also had a gap between her teeth; 

5) she also appeared more often than now.