1 {scene: Steve and Terry's house. Steve has tied the croc's snout up.}
1 Steve: That's not normal behaviour for a croc.
2 Steve: 'e must 'ave been driven mad with rage!
3 Terry: {pointing outside} Look, there's a note on the lawn. The crocodile must have dropped it.
4 Steve: {outside on the lawn, as Terry picks up the note} Crikey! What's it say?
4 Terry: "Steve killed your brother."

2014-04-08 Rerun commentary: I'm pretty sure crocodiles in the real world don't keep track of sibling relationships.

So you might say that this comic strip is slightly unrealistic.

(Oh, nor can they read notes. I almost let that one slip by uncommented.)