Cat
The domestic cat presents itself as a low-maintenance companion, a characterisation that proves substantially accurate upon investigation. Self-grooming behaviours consume between 30 and 50 percent of waking hours, reducing human intervention requirements considerably. Litter training occurs with minimal instruction, feeding schedules prove flexible, and veterinary requirements remain modest for indoor specimens. The cat's primary maintenance demand consists of emotional labour: the human must maintain appropriate levels of attention, affection, and treats whilst accepting that reciprocation remains entirely at the cat's discretion.
Penguin
Penguin maintenance presents challenges that would daunt even the most dedicated zoological professional. Captive penguins require water temperatures between 4 and 10 degrees Celsius, refrigeration systems of industrial capacity, and daily fish provisions measured in kilogrammes rather than grammes. Their social nature demands colony housing, whilst their aquatic requirements necessitate pool systems with sophisticated filtration. The average citizen seeking penguin companionship must first acquire facilities rivalling those of a professional aquarium, alongside the budget to operate them indefinitely.