List of Animal's IQ compared to humans

Jellyfish IQ: -43 (5,600 Neurons)

Leech IQ: -38 (10,000 Neurons)

Snail IQ: -37 (11,000 Neurons)

Slug IQ: -33 (18,000 Neurons)

Lobster IQ: -18 (100,000 Neurons)

Spider IQ: -18 (100,000 Neurons)

Zebrafish IQ: -18 (10,000 - 100,000 Neurons)

Cricket IQ: -10 (50,000 Neurons in Pallium Cortex)

Fruit Fly IQ: -10 (250,000 Neurons [10 million synapses])

Ant IQ: -10 (250,000 Neurons)

Honey Bee IQ: 2 (960k Neurons [1e+9 synapses])

Cockroach IQ: 2 (1 million neurons)

Guppy Fish IQ: 15 (4.3 million Neurons)

Gecko IQ: 15 (4.42 million Neurons)

Bat IQ: 23 (12 million Neurons)

Frog IQ: 26 (16 million Neurons)

Cape Mole-Rat IQ: 46 (170 million Neurons)

Nile Crocodile: 40 (80.5 million Neurons)

Mouse IQ: 40 (71 million neurons [1e+12 Synapses])

Brown Rat IQ: 48 (200 million Neurons [4.48e+11 Synapses])

Guinea Pig IQ: 49 (240 million Neurons)

Pigeon IQ: 51 (310 million Neurons)

Common Black Bird IQ: 53 (379 million Neurons)

Gray Squirrel IQ: 55 (453.66 million Neurons 77.33 million Neurons in Pallium Cortex)

European Rabbit IQ: 55 (494.2 million Neurons)

Octopus IQ: 55 (500 million Neurons)

Squid IQ: 55 (500 million Neurons)

Raccoon dog IQ: 63 (1.16 billion Neurons)

Cat IQ: 64 (760 million Neurons & 250 million in Cerebral Cortex [1e+10 Synapses])

Emu IQ: 64 (1.335 billion Neurons)

Gray Parrot IQ: 65 (1.566 billion Neurons)

Jackal IQ: 66 (1.73 billion Neurons)

Kangaroo IQ: 68 (370,0170,000 Neurons in Pallium Cortex)

Fox IQ: 68 (2.11 billion Neurons)

Raccoon IQ: 68 (2.149 billion Neurons)

Pig IQ: 68 (2.22 billion Neurons)

Barn Owl IQ: 69 (437 million Neurons in Pallium DVR)

Dog Beagle IQ: 70 (484 million Neurons in Pallium Cortex)

Dog IQ: 70 (~2.6 billion Neurons & 530 million Neurons in Cerebral Cortex)

Springbok IQ: 70 (2.72 billion neurons)

Blesbok IQ: 71 (3 billion neurons)

Golden Retriever IQ: 72 (0.627 billion Neurons in Pallium Cortex)

German Shepherd IQ: 72 (3.53 billion Neurons)

Komondor dog IQ: 73 (3.99 billion neurons)

Transylvanian Hound IQ: 74 (4.39 billion neurons)

Hyena IQ: 75 (3.9 billion Neurons)

Lion IQ: 75 (4.7 billion Neurons 54,524,000 Neurons in Pallium Cortex)

Greater Kudus IQ: 75 (4.9 billion neurons)

Raven IQ: 78 (2.171 billion Neurons 1.204 billion in Pallium Cortex)

Black and Yellow Macaw IQ: 82 (1.9 billion Neurons in Pallium Cortex)

Brown Bear IQ: 81 (9.586 billion Neurons)

Giraffe IQ: 82 (10.75 billion Neurons 1.731 in Pallium Cortex)

Sperm Whale IQ: 82 (2.02 billion Neurons in Pallium Cortex)

Baboon IQ: 85 (2.88 billion Neurons in Pallium Cortex)

Mandrill IQ: 86 (3.102 billion Neurons in Pallium Cortex)

Macaque IQ: 86 (6.376 billion Neurons, 3.5 billion in cortex)

Horse IQ: 88 (1.2 billion Neurons in Pallium Cortex)

Walrus IQ: 88 (3.929 billion Neurons in Pallium Cortex)

Gorilla IQ: 92 (33.4 billion Neurons)

Chimpanzee IQ: 94 (28 billion Neurons 7.4 billion in Pallium Cortex)

Orangutan IQ: 94 (32.6 billion Neurons 9.1 billion in Pallium Cortex)

Asian Elephant IQ: 95 (6.775 billion Neurons in Pallium Cortex)

Beluga Whale IQ: 96 (10 billion Neurons in Pallium Cortex)

Bottlenose Dolphin IQ: 98 (12.7 billion Neurons in Pallium Cortex)

Blue Whale IQ: 99 (15 billion Neurons in Pallium Cortex)

Human IQ: 100 (86 Billion Neurons & 16 billion in Cerebral Cortex [1e+14 Synapses])

Killer Whale IQ: 108 (43.1 billion Neurons in Pallium Cortex)

African Elephant IQ: 109 (2.57e+11 Neurons 5.6 billion in Pallium Cortex)

Useful IQ information:

Wonderlic to IQ formula: [score - avg=20] / [score sd=7.5] × 15 + 100

Intelligence doubles every 6 IQ points