Every player starts Life Is Life with five life cards, and things only go downhill from there.
To set up a round, shuffle the sixty-card deck, deal ten cards face down to each player, then place ten cards face up on the table in four rows, with the rows holding 1-4 cards. The deck consists of animal cards, with nine giraffe cards, eight bear cards, seven each mole and goat, and so on down to three mouse cards.
On a turn, a player either swaps 1-4 cards in hand with the face-up row that contains the same number of cards or knocks on the table to signal the end of the round; when a player knocks, each other player can make one final swap or also knock. Players then compare cards in hand to see who holds a majority of each type of animal. If a player holds more giraffe cards than each other player, for example, then that player keeps one giraffe card (worth 9 points as nine such cards are in the game) while all other giraffe cards are discarded. (A player can hold a majority by having one card and no one else having any cards.) After all animal types are compared, whoever has the most points loses no life cards; whoever has the fewest points loses two life cards; and whoever has a total between these extremes loses one life card.
Alternatively, if during a round a player collects all four cats or all five rabbits or pigs in hand, that player can end the round immediately, with all other players losing one life card.
If a player runs out of life cards, they're out of the game. At the end of a round, shuffle the cards and play again. Whoever last clings to life wins!