Nag 
To dream of an old horse or a 'nag' indicates a winding down of an idea or project and suggests humility and acceptance at this time.
A nag trying to keep up with other horses in a dream implies an inability to let go of a project but cautions you to release any expectations for your own happiness.
To dream of a person nagging you suggests that you may be trying to ignore that little voice inside that is trying to steer you in the appropriate direction. There is a reminder to stop and listen as you have the answer and you deserve to be heard.
To dream of nagging another person may indicate a personal frustration with an unconscious hint to relax and step away from a current bothersome situation.
Newt
A newt in a dream symbolizes the power to overcome danger. This small creature has been said to put out fires and was once featured on the shields of great knights.
The newt represents an unexpected triumph of something small over larger obstacles.
Nightingale
To dream of a singing nightingale denotes an attractive and wholesome environment. To dream of a silent nightingale means a spat among friends most likely due to miscommunication.
Octopus
To dream of an octopus implies a sense of being trapped in an unfavorable circumstance. It may also represent your overt possessiveness and overdependence in your present relationship.
Orangutan
To dream of an orangutan symbolizes betrayal in a lover. It also suggests manipulative acts used by some persons for their personal gain.
Orca
To dream of an orca symbolizes doubt and disbelief in motives.
Oriole
To dream of an oriole suggests warmth. It may represent the sun, light, and gladness. Orioles may likewise represent the summer season.
Ostrich
To dream of an ostrich represents your evasive approach in dealing with the realities of the world. You might be in denial and refuse to acknowledge the situation at hand. Alternatively, dreaming of an ostrich stands for truth and impartiality.
Otter
To dream of otters represents joy and wealth. You will experience bliss or unusual gentleness with your loved one.
Owl
To dream of an owl characterizes knowledge, opinions, and desirable qualities. Alternatively, dreaming of an owl may also be associated with death and gloom.
Hearing the eerie hoot of an owl connotes dissatisfaction and predicts a lurking death despite a state of gladness and healthiness.
The sight of a dead owl in your dream represents the slim chance of getting over a serious sickness. The dead owl may also symbolize death or end of old ways, as in an imperative change in life.
Ox
To dream of an ox symbolizes an equilibrium brought by masculine strength and feminine charm. This relates to the proverbial saying, 'as stubborn as an ox.'
Panda
To dream of a panda suggests an uncompromising attitude. You need to enter into an amicable compromise for the satisfaction of all parties involved.
To dream of a panda may also symbolize your childhood personality traits. It may also represent something that is cuddly.
Panther
To dream of a panther denotes hidden perils such as malignant foes. It may likewise symbolize elements of darkness and death in your life. On the other side, panthers may also represent authority, loveliness, gracefulness, and rebirth.
Parakeets
To see a parakeet signifies lack of creativity and innovation. You should try not to be bound by established customs and traditions. Go for something original.
Parakeets in a dream also symbolize immaturity and the inability to rely on oneself.
Parrots
To dream of a parrot indicates there are rumors swirling about you. It may also suggest that people are ridiculing you, or that you are involved with monotonous acts. On the other hand, the parrot can represent a strange or detestable person.
Partridge
To dream of a partridge represents autonomy and leadership capabilities. On the other hand, it may also symbolize deceit and enticement.
Peacock
To dream of a peacock symbolizes spring, birth, and growth. It is a good premonition that forecasts fame, victory, and satisfaction in your career. On the other hand, it may also be indicating your assurance and egotism.
Pelican
To dream of a pelican symbolizes cultivation and compassion towards other people.
Penguin
To dream of a penguin represents your magnification of a seemingly petty concern. This is a prompt for you to keep your composure and guard your objectivity. On the other hand, a penguin implies that you feel let down by your feelings. You need to bring equilibrium and peace to your life.
Pheasant
To dream of a pheasant signifies maternal care and upbringing.