In eerie animal news this week, tens of thousands of dead fish and seagulls washed up on the Ontario shores of Lake Erie. Although the cause of the incident remains unknown, an Ontario Ministry of the Environment spokeswoman said it may have been a "rolling over of the lake," reported the Chatham Daily News, which occurs when colder water with lower oxygen levels reaches the surface.

In the Czech Republic, a keeper at the zoo in Dvur Kralove was attacked by a pygmy hippopotamus. The Associated Press reported that a hospital spokesman "said the woman had lost a lot of blood due to right-leg injuries and doctors were battling to save her leg."

Although they appeared to be in danger, this family of ducks successfully crossed a busy Canadian freeway in one of the most hair-raising animal videos in recent memory.

Earlier this week, a black bear was on the run after eluding police, firefighters and animal control officers in a suburb of Cleveland, Ohio. The bear, which had been in a tree, had been sprayed with water by officials trying to coax him down.

In case you missed it, check out this funny clip of a dog and fish that share a few kisses in a lake.

Find some of the week's best animal photos below:

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  • A rare white Indian tiger cub plays with its mother Surya Bara at a zoo in the city of Liberec, Czech Republic, Monday, Sept. 3, 2012. It's one of triplets that were born in July. (AP Photo/Petr David Josek)

  • This photo provided by the San Diego Zoo shows a 5-week-old giant panda at the Zoo. San Diego Zoo veterinarians announced Thursday, Sept. 6, 2012, the 3.2-pound cub is a boy. Veterinarian Meg Sutherland Smith, DVM, said despite being a bit lighter in weight than Bai Yun

  • WEST HOATHLY, UNITED KINGDOM - SEPTEMBER 08: A grasshopper proves an early morning surprise as it sits sunning itself on a toothbrush on a bathroom window sill on September 8, 2012 in West Hoathly, Sussex, England. (Photo by David Cannon/Getty Images)

  • A rare white Indian tiger cub sits at the feet of its mother Surya Bara at a zoo in the city of Liberec, Czech Republic, Monday, Sept. 3, 2012. It's one of triplets that were born in July. (AP Photo/Petr David Josek)

  • A Tasmanian devil cub tries to bite his way out of a small bag during an event marking the National Endangered Species Day in Sydney, Australia, Friday, Sept. 7, 2012. The National Threatened Species Day is a community action and an education event aimed at highlighting vulnerable Australian animals and and what can be done in our daily lives to save them. (AP Photo/Rob Griffith)

  • Denali, a male gray wolf, walks between trees at the Alaska Zoo on Wednesday, Sept. 5, 2012, in Anchorage, Alaska. The 6-year-old wolf is one of two candidates for zoo "president" in a fundraiser that matches the timing of the U.S. presidential race. He's running against Ahpun, a polar bear, and ballots are $1. (AP Photo/Dan Joling)

  • Ahpun, a female polar bear, strolls around her cage at the Alaska Zoo on Wednesday, Sept. 5, 2012, in Anchorage, Alaska. The bear is one of two candidates for zoo "president" in a fundraiser that matches the timing of the U.S. presidential race. She's running against Denali, a wolf, and ballots are $1. (AP Photo/Dan Joling)

  • A koala is perched on a tree branch while displayed in a booth at Martin Place public square in Sydney's central district as Australia's zoo and aquarium association celebrate the National Threatened Species Day on September 7, 2012. The event brings focus on wildlife conservation and education of local communities about the importance of threatened species in Australia while visitors can interact with the animals handled by wildlife personnel. AFP PHOTO / ROMEO GACAD

  • A snail is pictured at a garden in Kathmandu on September 8, 2012. AFP PHOTO/Prakash MATHEMA

  • TORONTO, ON - SEPTEMBER 07: Bonnie the Dog attends 'Seven Psychopaths' premiere during the 2012 Toronto International Film Festival at Ryerson Theatre on September 7, 2012 in Toronto, Canada. (Photo by Mark Davis/Getty Images)

  • Emirati men stand with their Saluki dogs during the Arabian Saluki beauty contest at the Abu Dhabi International Hunting and Equestrian exhibtion (ADIHEX) in the Emirati capital on September 7, 2012. AFP PHOTO/KARIM SAHIB

  • A Tasmanian devil is displayed by wildlife personnel at Martin Place public square in Sydney's central district as Australia's zoo and aquarium association celebrate the National Threatened Species Day on September 7, 2012.The event brings focus on wildlife conservation and education of local communities about the importance of threatened species in Australia while visitors can interact with the animals handled by wildlife personnel. AFP PHOTO / ROMEO GACAD

  • A Tawny Frogmouth bird is displayed by wildlife personnel at Martin Place public square in Sydney's central district as Australia's zoo and aquarium association celebrate the National Threatened Species Day on September 7, 2012. The event brings focus on wildlife conservation and education of local communities about the importance of threatened species in Australia while visitors can interact with the animals handled by wildlife personnel. AFP PHOTO / ROMEO GACAD

  • A rare gold brushtail possum eat carrots while displayed by wildlife personnel at Martin Place public square in Sydney's central district as Australia's zoo and aquarium association celebrate the National Threatened Species Day on September 7, 2012. The event brings focus on wildlife conservation and education of local communities about the importance of threatened species in Australia while visitors can interact with the animals handled by wildlife personnel. AFP PHOTO / ROMEO GACAD

  • A koala is handled by a wildlife personnel at Martin Place public square in Sydney's central district as Australia's zoo and aquarium association celebrate the National Threatened Species Day on September 7, 2012. The event brings focus on wildlife conservation and education of local communities about the importance of threatened species in Australia while visitors can interact with the animals handled by wildlife personnel. AFP PHOTO / ROMEO GACAD

  • MASSAPEQUA, NY - SEPTEMBER 06: A Bernese Mountain dog deals with the heat at the Town of Oyster Bay Dog Park on September 6, 2012 in Massapequa, New York. (Photo by Bruce Bennett/Getty Images)

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