I wouldn't sail this ship if I were you
1. The penguin. You show your interest in someone by bringing them tokens of affection, such as pebbles. You expect your lover to fashion these tokens of affection into a rudimentary nest and lay eggs in it. There are never any eggs. Your love life is perpetually disappointing.
2. The bonobo. You show your interest in someone by having sex with them. This is also how you express excitement, boredom or an interest in reconciliation. As you get to know someone better, you express your continued affection for them by continuing to have sex with them. Truly special partners may get priority spots in your busy sexing schedule.
3. The fish. You show your interest by following someone around, waiting for them to leave some eggs behind. Why are there never any eggs? You spend a lot of time drinking and commiserating with penguins. Actually, you spend a lot of time drinking in general. Occasionally, you are arrested for wanking over discarded shopping trolleys.
4. The panda. You dislike embarking on relationships without an extreme level of logistical support, including a team of scientists devoted to monitoring your hormone levels and full documentation of each introduction to a potential partner. If these conditions are fulfilled, you show affection by tolerating your potential partner and not eviscerating anyone with your giant claws.
5. The cat. You show your interest in someone by pointedly ignoring them, unless they have food. As you get to know and trust someone you will slowly progress to a more sociable, casual level of ignoring them. When you are truly comfortable in someone’s presence you will sit on their sofa and lick your anus, occasionally fixing them with a sharp stare.