Dog
Dogs teach what philosophers might term the practice of presence. They exist entirely in the current moment, demonstrating neither regret for past mistakes nor anxiety about future uncertainties. Living with a dog provides daily exposure to this mode of being, a counterpoint to the human tendency toward rumination and anticipation.
Dogs also teach unconditional commitment. They do not calculate whether their owner's current behaviour justifies continued loyalty. This modelling of unwavering dedication regardless of circumstance offers humans a template for relationship behaviour that many struggle to achieve independently.
Poker
Poker teaches the brutal mathematics of consequence. Every decision receives immediate feedback in the form of chips won or lost. The game demonstrates with painful clarity that intentions do not determine outcomes, that good decisions can produce bad results through variance, and that bad decisions will eventually be punished by probability regardless of short-term luck.
Most valuable is poker's instruction in accepting responsibility. Blaming bad luck for losses, while emotionally satisfying, prevents improvement. Successful players learn to analyse their decisions rather than their outcomes, a cognitive discipline applicable to every domain of human activity.
VERDICT
Dogs teach presence and loyalty through passive example. Poker teaches probability and accountability through active, costly feedback that enforces learning.