Full-grown oppossum's are generally the size of the domestic house cat. They are about 2.5 feet long (nose to tail) and weight anywhere from 8.8 to 13.2 pounds (4-6kg, about 76cm long).
When baby oppossums are born, they are about 0.6 in long (14mm), and weigh next to nothing!
The average weight of the brain of an opossum is 6 grams.
In its head, as in all mammals and indeed most animals!
Around the size of a cat.
Maybe the size of its clenched fist
4 to 15 lb.
On average, the opossum litter is 7 or 8.
The average size of a donkey's brain is comparable to a human. The donkey's brain is between 50 and 75 percent of the size of the human brain.
there brain is about the size of a base ball
It is one-third the size of a human brain.
The brain size of ravens are on average the largest of any other bird. They have the same brain to body ratio as a chimpanzee.
Between the ages of 10-12 the average size of a male brain is 1,440 grams and the average size of a female brain is 1,260 grams. The size of a nine year olds brain is only slightly smaller.
35GRAMS
300
12cm
The average human brain weighs three pounds (1.36 kilograms). The average female brain capacity is 79.3 cubic inches, slightly smaller than the male brain of 88.5 cubic inches. The largest human brains may be twice those of average size, but size has no relevance to brain performance.
About the size of a cat.
The average Neanderthal brain size was about 1,600 cc, which is slightly larger than the average modern human brain size of around 1,400 cc. This suggests that Neanderthals had relatively large brains compared to their body size.