The United States has had 45 presidents, but way more presidential pets. Some presidents have had dozens of animal companions during their time in the White House; others just one or two. Of 45, there have been only four presidents without pets.

What animals have been most popular has changed over the past 246 years. It’s been quite some time since a president housed a horse on the White House property, and birds, once quite popular, haven’t lived in the White House since the 60s.

The most popular animals in the White House over the years have been horses and dogs. However, considering horses, especially in the first 150 or so years, were often working animals, we have excluded them as “pets.” This leaves dogs as the most popular presidential pet, with 30 of the 45 presidents having owned one or more dogs while in office.

One of the least popular? Cats. There have actually been more birds living in the White House than cats.

Here are just a few of the more interesting and memorable presidential pets.

George Washington

The U.S. first president was also a dog lover. Records show he owned all manner of dogs throughout his life, but he was particularly fond of hounds. If fact, not only was he a founding father of the United States, he was one of the founding breeders of the American foxhound. His wife, Martha Washington, was the first First Lady to have a bird (a parrot, in her case); many first ladies followed her lead.

John Adams

Little is known about John Adams’ two dogs, Juno and Satan, other than they were the first presidential pets to live in the White House.

Thomas Jefferson

Jefferson was the first president to favor feathered friends over the four-legged variety. In particular, he was enamored with mockingbirds and had several but Dick was his favorite. There are numerous accounts of Dick having free range of the president’s office (now the State Dining Room), and he was also known to sit on Jefferson’s shoulder.

James Madison

The Madisons were another bird-loving presidential family and Dolley Madison’s parrot, Polly was particularly well-known. Visitors to the White House were often greeted by Mrs. Madison and Polly in the Reception Room, making for excellent ice-breaking conversations.

John Quincy Adams

The second Adams was supposedly gifted an alligator that he kept in a bathroom in the White House for several months. However, no solid evidence has ever been found to back this tale up. Though the alligator is mentioned in the Presidential Pet Museum, chances are high this rumor is folklore and not history.

Andrew Jackson

Jackson’s most interesting animal companion was a parrot named Poll, whose collection of swear words turned into a problem at Jackson’s funeral, when it wouldn’t stop cursing. Jackson’s collection of horses was also notable; he had so many he had to ask Congress for approval to build a larger White House stable.

Martin Van Buren

Van Buren was gifted two tiger cubs that he fought congress to be allowed to keep as pets. Le lost, and Congress ordered him to donate them to a zoo.

James K. Polk

Polk was the first U.S. president without pets.

Franklin Pierce

Pierce, who oversaw the signing of a treaty that opened Japan to foreigners for the first time, was gifted teacup-sized Chin dogs and Japanese birds. It is believed he kept only one of the dogs for himself but how many he received is disputed; some reports say two, others seven. Nothing is known about the birds.

Abraham Lincoln

Lincoln was the first president recorded to have White House cats. He was quoted as saying one of his cats, Dixie, was smarter than his entire cabinet. He also had dogs, goats, a rabbit, turkey, and a horse.

Andrew Johnson

Johnson is most famously the first president to be impeached. He’s also the second president without pets.

Rutherford B. Hayes

President Hayes was a dog lover, with eight dogs and three cats, including two Siamese, the first ever to be owned in the United States. Both cats were a gift from the King of Siam. His dogs included a Cocker Spaniel, English Mastiff, Greyhound, Newfoundland and a miniature Schnauzer.

Grover Cleveland

Cleveland was yet another dog-loving president. His list of dogs included a Cocker Spaniel, Collie, St. Bernard, Dachshunds, a Poodle (actually Mrs. Cleveland’s) and Foxhounds. The Clevelands also had canaries, mockingbirds, and fish.

Benjamin Harrison

While Harrison did have presidential dogs, his most unusual pets were two opossums named Mr. Reciprocity and Mr. Protection.

William McKinley

President McKinley had an unusual sense of humor and a parrot named Washington Post he taught to whistle Yankee Doodle. He even appointed the parrot as the official greeter at the White House.

Theodore Roosevelt

As befits one of the wildest presidents in U.S. history, Teddy Roosevelt’s collection of animals was equally as wild. Among his many pets, Roosevelt counted guinea pigs, lizards, dogs of many breeds, parrots, snakes, a rat, badger, pig, rabbit, and cats. Other animals included a one-legged rooster, a hyena, and a small black bear that he eventually sent to the Bronx Zoo.

Woodrow Wilson

Along with an Airedale terrier and bull terrier, a cat and some songbirds, Wilson had a flock of sheep, which at its peak numbered 48 and a ram. The wool from the sheep was sold to benefit the Red Cross.

Calvin Coolidge

Coolidge was another dog fanatic and counted collies, a fox terrier, Airedale terrier, chow chow, Shetland sheepdog, Boston bulldog, and a Belgian sheepdog among his pack. He also had a raccoon, donkey, canaries, and cats. At times throughout his presidency he also had a bobcat, lion cubs, a pygmy hippopotamus, a wallaby, a duiker (small type of antelope), a black bear, and several ducklings. All of the more exotic animals were eventually sent to zoos.

Herbert Hoover

Yet another dog-loving president, Hoover had quite the pack including a Belgian shepherd, German shepherd, two fox terriers, a collie, Canadian Eskimo dog, Irish wolfhound, a setter and a Norwegian elkhound. He and his wife also adopted an opossum and had a canary.

Franklin D. Roosevelt

For the longest-serving president, FDR didn’t have as many dogs as you might expect. In his 12 years as president, he had five dogs, but the most famous of his presidential dogs was Fala, a Scottish terrier. Fala knew many tricks and was often featured in the media. He is the only presidential pet memorialized in a statue — two actually, one at the FDR Memorial in Washington, D.C. and the other at the Paseo de los Presidentes in San Juan, Puerto Rico.

Harry S. Truman

Most famous as the president who dropped two atomic bombs, Truman was the third to have no pets. He famously gave away a cocker spaniel who had been gifted to him.

John F. Kennedy

Few presidents have had as many pets in the White House as JFK. Among the many animals that found a home with the Kennedys were seven dogs. The most interesting of them was Pushinka, a gift from Soviet Union Premier Nikita Khrushchev, who was the puppy of the Soviet space dog Strelka. Also living at the White House were a cat, several birds, three ponies and a horse, two hamsters, and a rabbit.

Lyndon B. Johnson

Johnson’s two beagles, Him and Her, are among the White House’s most famous presidential dogs. But the Johnsons had two other beagles, a collie, and a mutt, along with hamsters and lovebirds.

Gerald Ford

The Fords were the second presidential family to have a Siamese cat. (She belonged to Ford’s daughter Susan.) They also had a golden retriever named Liberty, who Ford was fond of walking around the White House lawn.

Jimmy Carter

The Carter’s most well-known pet was yet another Siamese cat, Misty Malarky Ying Yang, who belonged to Amy Carter.

George H.W. Bush

A single-term president, H.W. Bush had just one dog, Millie, a springer spaniel.

Bill Clinton

The Clintons had a well-known cat named Socks, a stray that they adopted off the street. He was their sole pet until Buddy, the chocolate lab, came along during Clinton’s second term.

George W. Bush

Bush was the last to have a presidential cat, though she was overshadowed by his more well-known Scottish terriers, Barney and Miss Beazley. For a short while, he also had an English springer spaniel, the offspring of the first President Bush’s dog Millie.

Barack Obama

The Obama’s were gifted Bo, a Portuguese water dog the year he was elected to be president. They added a second dog, Sunny, to their family during his second term.

Donald Trump

Trump is only the fourth president without pets.