According to the MSPCA, certain kinds of rats burrow underground. In residential areas, the most common of these is the Norway rat. Their burrows are found next to buildings, fences, sidewalks, patios, sheds and decks.
A typical burrow for a Norway rat is 12 to 18 inches underground and runs for about 1 yard. The access hole is anywhere from 3 to 10 inches wide and is usually dug at an angle. Norway rats are brown or reddish gray with gray-white underbellies. Their total length is 12 to 18 inches. Their tails, which have little hair, are 5 to 8 inches long. Norway rats become problematic for humans when they move indoors, depositing urine and feces. Sometimes these animals chew and destroy electrical wiring.Learn More
Sand dollars reproduce sexually and asexually. Female sand dollars distribute eggs into the ocean water as males hover nearby. The male sand dollar expels sperm over the eggs to fertilize them. The fertilized eggs float out to sea, develop into larvae and eventually settle at the bottom of the sea where they continue their life cycle.Full Answer >
There are few observable traits distinguishing migrating animals from non-migratory species. Many birds, such as Arctic terns, mallards and bar-tailed godwits migrate across vast distances, while some of their close relatives remain in the same place all year. There are species of birds, fish, mammals, and even reptiles and amphibians that migrate each year.Full Answer >
Spaying and neutering are both procedures used to sterilize animals like dogs and cats, but spaying refers to the procedure done to female animals while neutering is the corresponding process for males. Spaying involves taking out the uterus and ovaries while male pets are neutered by taking out the testicles.Full Answer >
Cheetahs form no pair bonds and mate freely with members of the opposite sex during any time of the year. The males associate with the females for mating only, and provide no parental care. Cheetahs mate an average of three to five times per day, often with different individuals.Full Answer >